diff --git a/README.md b/README.md
index 2915db6..272a509 100644
--- a/README.md
+++ b/README.md
@@ -107,7 +107,11 @@ Create a conversion request:
 ```bash
 curl \
   --header "Content-Type: application/json" \
-  --data '{"sourceFilename":"example.pptx","resolution":"CONVERSION_RESOLUTION_FHD"}' \
+  --data '{
+    "sourceFilename":"example.pptx",
+    "full":{"resolution":"CONVERSION_RESOLUTION_FHD","jpeg":{"quality":85}},
+    "thumbnail":{"resolution":"CONVERSION_RESOLUTION_SD","jpeg":{"quality":75}}
+  }' \
   http://localhost:8080/officeconvertapi.v1.ConversionService/CreateConversion
 ```
 
@@ -139,8 +143,10 @@ Use `.env.example` as your baseline env configuration.
 
 If conversion fails on larger decks, tune these environment variables:
 
-- `CreateConversionRequest.resolution` controls output dimensions via presets: `SD`, `HD`, `FHD`, `QHD`, `UHD`.
-- Omitting `resolution` (or sending `CONVERSION_RESOLUTION_UNSPECIFIED`) defaults to `FHD`.
-- Rasterization DPI is inferred automatically from source slide size and selected output dimensions.
+- `CreateConversionRequest.full.resolution` controls full-size output dimensions via presets: `SD`, `HD`, `FHD`, `QHD`, `UHD`.
+- `CreateConversionRequest.thumbnail.resolution` controls thumbnail output dimensions with the same presets.
+- Omitting full/thumbnail resolution (or sending `CONVERSION_RESOLUTION_UNSPECIFIED`) defaults to `FHD` for full and `SD` for thumbnail.
+- Output is JPEG-only for now; set `CreateConversionRequest.full.jpeg.quality` and `CreateConversionRequest.thumbnail.jpeg.quality` to `1..100` (`0` or omitted uses server defaults: full `85`, thumbnail `75`).
+- Rasterization DPI is inferred automatically from source slide size and selected full/thumbnail output dimensions.
 - `CONVERSION_PPTX_TO_PDF_TIMEOUT_SECONDS` (default `180`): timeout for LibreOffice export.
 - `CONVERSION_PDF_TO_IMAGES_TIMEOUT_SECONDS` (default `1800`): timeout for Poppler rasterization.
diff --git a/clients/go/officeconvertclient/client.go b/clients/go/officeconvertclient/client.go
index 76398e1..b5c94ce 100644
--- a/clients/go/officeconvertclient/client.go
+++ b/clients/go/officeconvertclient/client.go
@@ -8,13 +8,25 @@ import (
 	"time"
 
 	"connectrpc.com/connect"
-	"github.com/segmentio/ksuid"
 	officeconvertapiv1 "gitea.auvem.com/end-internal/officeconvert/gen/go/officeconvertapi/v1"
 	"gitea.auvem.com/end-internal/officeconvert/gen/go/officeconvertapi/v1/officeconvertapiv1connect"
+	"github.com/segmentio/ksuid"
 )
 
 const defaultPollInterval = 2 * time.Second
 
+// RasterTierOptions defines per-tier raster settings for conversion output.
+type RasterTierOptions struct {
+	Resolution  officeconvertapiv1.ConversionResolution
+	JPEGQuality int32
+}
+
+// CreateConversionOptions configures optional full and thumbnail raster tiers.
+type CreateConversionOptions struct {
+	Full      *RasterTierOptions
+	Thumbnail *RasterTierOptions
+}
+
 // Client wraps the generated Connect client with orchestration-focused helpers.
 type Client struct {
 	rpc          officeconvertapiv1connect.ConversionServiceClient
@@ -47,12 +59,16 @@ func (c *Client) SetPollInterval(interval time.Duration) {
 func (c *Client) CreateConversion(
 	ctx context.Context,
 	sourceFilename string,
-	resolution officeconvertapiv1.ConversionResolution,
+	options *CreateConversionOptions,
 ) (*CreateConversionResponse, error) {
-	req := connect.NewRequest(&officeconvertapiv1.CreateConversionRequest{
+	message := &officeconvertapiv1.CreateConversionRequest{
 		SourceFilename: sourceFilename,
-		Resolution:     resolution,
-	})
+	}
+	if options != nil {
+		message.Full = toProtoSlideRasterOptions(options.Full)
+		message.Thumbnail = toProtoSlideRasterOptions(options.Thumbnail)
+	}
+	req := connect.NewRequest(message)
 	res, err := c.rpc.CreateConversion(ctx, req)
 	if err != nil {
 		return nil, err
@@ -60,6 +76,25 @@ func (c *Client) CreateConversion(
 	return augmentCreateConversionResponse(res.Msg)
 }
 
+func toProtoSlideRasterOptions(
+	options *RasterTierOptions,
+) *officeconvertapiv1.SlideRasterOptions {
+	if options == nil {
+		return nil
+	}
+	proto := &officeconvertapiv1.SlideRasterOptions{
+		Resolution: options.Resolution,
+	}
+	if options.JPEGQuality != 0 {
+		proto.Format = &officeconvertapiv1.SlideRasterOptions_Jpeg{
+			Jpeg: &officeconvertapiv1.JpegOutputOptions{
+				Quality: options.JPEGQuality,
+			},
+		}
+	}
+	return proto
+}
+
 // StartConversion signals that upload is complete and conversion can begin.
 func (c *Client) StartConversion(
 	ctx context.Context,
diff --git a/clients/go/officeconvertclient/orchestrate.go b/clients/go/officeconvertclient/orchestrate.go
index 87e7ab7..d705d7e 100644
--- a/clients/go/officeconvertclient/orchestrate.go
+++ b/clients/go/officeconvertclient/orchestrate.go
@@ -19,7 +19,7 @@ func (c *Client) ConvertPPTXFile(ctx context.Context, localPPTXPath string) (*Co
 	createRes, err := c.CreateConversion(
 		ctx,
 		filepath.Base(localPPTXPath),
-		officeconvertapiv1.ConversionResolution_CONVERSION_RESOLUTION_UNSPECIFIED,
+		nil,
 	)
 	if err != nil {
 		return nil, fmt.Errorf("create conversion: %w", err)
diff --git a/gen/go/officeconvertapi/v1/conversion.pb.go b/gen/go/officeconvertapi/v1/conversion.pb.go
index 0135ccb..32393d7 100644
--- a/gen/go/officeconvertapi/v1/conversion.pb.go
+++ b/gen/go/officeconvertapi/v1/conversion.pb.go
@@ -196,19 +196,144 @@ func (ConversionResolution) EnumDescriptor() ([]byte, []int) {
 	return file_officeconvertapi_v1_conversion_proto_rawDescGZIP(), []int{2}
 }
 
-// Slide contains extracted notes and the rendered image URL for one slide.
-type Slide struct {
-	state         protoimpl.MessageState `protogen:"open.v1"`
-	Index         int32                  `protobuf:"varint,1,opt,name=index,proto3" json:"index,omitempty"`
-	NotesPlain    string                 `protobuf:"bytes,2,opt,name=notes_plain,json=notesPlain,proto3" json:"notes_plain,omitempty"`
-	ImageUrl      string                 `protobuf:"bytes,3,opt,name=image_url,json=imageUrl,proto3" json:"image_url,omitempty"`
+// JpegOutputOptions configures JPEG-specific encoding controls.
+type JpegOutputOptions struct {
+	state protoimpl.MessageState `protogen:"open.v1"`
+	// JPEG quality from 1..100. 0 means server default.
+	Quality       int32 `protobuf:"varint,1,opt,name=quality,proto3" json:"quality,omitempty"`
 	unknownFields protoimpl.UnknownFields
 	sizeCache     protoimpl.SizeCache
 }
 
+func (x *JpegOutputOptions) Reset() {
+	*x = JpegOutputOptions{}
+	mi := &file_officeconvertapi_v1_conversion_proto_msgTypes[0]
+	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+	ms.StoreMessageInfo(mi)
+}
+
+func (x *JpegOutputOptions) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*JpegOutputOptions) ProtoMessage() {}
+
+func (x *JpegOutputOptions) ProtoReflect() protoreflect.Message {
+	mi := &file_officeconvertapi_v1_conversion_proto_msgTypes[0]
+	if x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use JpegOutputOptions.ProtoReflect.Descriptor instead.
+func (*JpegOutputOptions) Descriptor() ([]byte, []int) {
+	return file_officeconvertapi_v1_conversion_proto_rawDescGZIP(), []int{0}
+}
+
+func (x *JpegOutputOptions) GetQuality() int32 {
+	if x != nil {
+		return x.Quality
+	}
+	return 0
+}
+
+// SlideRasterOptions defines rendering settings for a raster output tier.
+type SlideRasterOptions struct {
+	state protoimpl.MessageState `protogen:"open.v1"`
+	// Output resolution preset. UNSPECIFIED means server default for the tier.
+	Resolution ConversionResolution `protobuf:"varint,1,opt,name=resolution,proto3,enum=officeconvertapi.v1.ConversionResolution" json:"resolution,omitempty"`
+	// Types that are valid to be assigned to Format:
+	//
+	//	*SlideRasterOptions_Jpeg
+	Format        isSlideRasterOptions_Format `protobuf_oneof:"format"`
+	unknownFields protoimpl.UnknownFields
+	sizeCache     protoimpl.SizeCache
+}
+
+func (x *SlideRasterOptions) Reset() {
+	*x = SlideRasterOptions{}
+	mi := &file_officeconvertapi_v1_conversion_proto_msgTypes[1]
+	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+	ms.StoreMessageInfo(mi)
+}
+
+func (x *SlideRasterOptions) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*SlideRasterOptions) ProtoMessage() {}
+
+func (x *SlideRasterOptions) ProtoReflect() protoreflect.Message {
+	mi := &file_officeconvertapi_v1_conversion_proto_msgTypes[1]
+	if x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use SlideRasterOptions.ProtoReflect.Descriptor instead.
+func (*SlideRasterOptions) Descriptor() ([]byte, []int) {
+	return file_officeconvertapi_v1_conversion_proto_rawDescGZIP(), []int{1}
+}
+
+func (x *SlideRasterOptions) GetResolution() ConversionResolution {
+	if x != nil {
+		return x.Resolution
+	}
+	return ConversionResolution_CONVERSION_RESOLUTION_UNSPECIFIED
+}
+
+func (x *SlideRasterOptions) GetFormat() isSlideRasterOptions_Format {
+	if x != nil {
+		return x.Format
+	}
+	return nil
+}
+
+func (x *SlideRasterOptions) GetJpeg() *JpegOutputOptions {
+	if x != nil {
+		if x, ok := x.Format.(*SlideRasterOptions_Jpeg); ok {
+			return x.Jpeg
+		}
+	}
+	return nil
+}
+
+type isSlideRasterOptions_Format interface {
+	isSlideRasterOptions_Format()
+}
+
+type SlideRasterOptions_Jpeg struct {
+	Jpeg *JpegOutputOptions `protobuf:"bytes,2,opt,name=jpeg,proto3,oneof"`
+}
+
+func (*SlideRasterOptions_Jpeg) isSlideRasterOptions_Format() {}
+
+// Slide contains extracted notes and the rendered image URL for one slide.
+type Slide struct {
+	state      protoimpl.MessageState `protogen:"open.v1"`
+	Index      int32                  `protobuf:"varint,1,opt,name=index,proto3" json:"index,omitempty"`
+	NotesPlain string                 `protobuf:"bytes,2,opt,name=notes_plain,json=notesPlain,proto3" json:"notes_plain,omitempty"`
+	// Full-size rendered image URL.
+	ImageUrl string `protobuf:"bytes,3,opt,name=image_url,json=imageUrl,proto3" json:"image_url,omitempty"`
+	// Thumbnail rendered image URL.
+	ThumbnailImageUrl string `protobuf:"bytes,4,opt,name=thumbnail_image_url,json=thumbnailImageUrl,proto3" json:"thumbnail_image_url,omitempty"`
+	unknownFields     protoimpl.UnknownFields
+	sizeCache         protoimpl.SizeCache
+}
+
 func (x *Slide) Reset() {
 	*x = Slide{}
-	mi := &file_officeconvertapi_v1_conversion_proto_msgTypes[0]
+	mi := &file_officeconvertapi_v1_conversion_proto_msgTypes[2]
 	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 	ms.StoreMessageInfo(mi)
 }
@@ -220,7 +345,7 @@ func (x *Slide) String() string {
 func (*Slide) ProtoMessage() {}
 
 func (x *Slide) ProtoReflect() protoreflect.Message {
-	mi := &file_officeconvertapi_v1_conversion_proto_msgTypes[0]
+	mi := &file_officeconvertapi_v1_conversion_proto_msgTypes[2]
 	if x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -233,7 +358,7 @@ func (x *Slide) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use Slide.ProtoReflect.Descriptor instead.
 func (*Slide) Descriptor() ([]byte, []int) {
-	return file_officeconvertapi_v1_conversion_proto_rawDescGZIP(), []int{0}
+	return file_officeconvertapi_v1_conversion_proto_rawDescGZIP(), []int{2}
 }
 
 func (x *Slide) GetIndex() int32 {
@@ -257,6 +382,13 @@ func (x *Slide) GetImageUrl() string {
 	return ""
 }
 
+func (x *Slide) GetThumbnailImageUrl() string {
+	if x != nil {
+		return x.ThumbnailImageUrl
+	}
+	return ""
+}
+
 // SlideDeck is the final structured conversion artifact.
 type SlideDeck struct {
 	state protoimpl.MessageState `protogen:"open.v1"`
@@ -265,15 +397,21 @@ type SlideDeck struct {
 	SourceFilename string                 `protobuf:"bytes,2,opt,name=source_filename,json=sourceFilename,proto3" json:"source_filename,omitempty"`
 	Slides         []*Slide               `protobuf:"bytes,3,rep,name=slides,proto3" json:"slides,omitempty"`
 	CreatedAt      *timestamppb.Timestamp `protobuf:"bytes,4,opt,name=created_at,json=createdAt,proto3" json:"created_at,omitempty"`
-	Width          int32                  `protobuf:"varint,5,opt,name=width,proto3" json:"width,omitempty"`
-	Height         int32                  `protobuf:"varint,6,opt,name=height,proto3" json:"height,omitempty"`
-	unknownFields  protoimpl.UnknownFields
-	sizeCache      protoimpl.SizeCache
+	// Full-size raster width in pixels.
+	Width int32 `protobuf:"varint,5,opt,name=width,proto3" json:"width,omitempty"`
+	// Full-size raster height in pixels.
+	Height int32 `protobuf:"varint,6,opt,name=height,proto3" json:"height,omitempty"`
+	// Thumbnail raster width in pixels.
+	ThumbnailWidth int32 `protobuf:"varint,7,opt,name=thumbnail_width,json=thumbnailWidth,proto3" json:"thumbnail_width,omitempty"`
+	// Thumbnail raster height in pixels.
+	ThumbnailHeight int32 `protobuf:"varint,8,opt,name=thumbnail_height,json=thumbnailHeight,proto3" json:"thumbnail_height,omitempty"`
+	unknownFields   protoimpl.UnknownFields
+	sizeCache       protoimpl.SizeCache
 }
 
 func (x *SlideDeck) Reset() {
 	*x = SlideDeck{}
-	mi := &file_officeconvertapi_v1_conversion_proto_msgTypes[1]
+	mi := &file_officeconvertapi_v1_conversion_proto_msgTypes[3]
 	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 	ms.StoreMessageInfo(mi)
 }
@@ -285,7 +423,7 @@ func (x *SlideDeck) String() string {
 func (*SlideDeck) ProtoMessage() {}
 
 func (x *SlideDeck) ProtoReflect() protoreflect.Message {
-	mi := &file_officeconvertapi_v1_conversion_proto_msgTypes[1]
+	mi := &file_officeconvertapi_v1_conversion_proto_msgTypes[3]
 	if x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -298,7 +436,7 @@ func (x *SlideDeck) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use SlideDeck.ProtoReflect.Descriptor instead.
 func (*SlideDeck) Descriptor() ([]byte, []int) {
-	return file_officeconvertapi_v1_conversion_proto_rawDescGZIP(), []int{1}
+	return file_officeconvertapi_v1_conversion_proto_rawDescGZIP(), []int{3}
 }
 
 func (x *SlideDeck) GetConversionId() string {
@@ -343,18 +481,33 @@ func (x *SlideDeck) GetHeight() int32 {
 	return 0
 }
 
+func (x *SlideDeck) GetThumbnailWidth() int32 {
+	if x != nil {
+		return x.ThumbnailWidth
+	}
+	return 0
+}
+
+func (x *SlideDeck) GetThumbnailHeight() int32 {
+	if x != nil {
+		return x.ThumbnailHeight
+	}
+	return 0
+}
+
 // CreateConversionRequest starts a conversion session.
 type CreateConversionRequest struct {
 	state          protoimpl.MessageState `protogen:"open.v1"`
 	SourceFilename string                 `protobuf:"bytes,1,opt,name=source_filename,json=sourceFilename,proto3" json:"source_filename,omitempty"`
-	Resolution     ConversionResolution   `protobuf:"varint,2,opt,name=resolution,proto3,enum=officeconvertapi.v1.ConversionResolution" json:"resolution,omitempty"`
+	Full           *SlideRasterOptions    `protobuf:"bytes,2,opt,name=full,proto3" json:"full,omitempty"`
+	Thumbnail      *SlideRasterOptions    `protobuf:"bytes,3,opt,name=thumbnail,proto3" json:"thumbnail,omitempty"`
 	unknownFields  protoimpl.UnknownFields
 	sizeCache      protoimpl.SizeCache
 }
 
 func (x *CreateConversionRequest) Reset() {
 	*x = CreateConversionRequest{}
-	mi := &file_officeconvertapi_v1_conversion_proto_msgTypes[2]
+	mi := &file_officeconvertapi_v1_conversion_proto_msgTypes[4]
 	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 	ms.StoreMessageInfo(mi)
 }
@@ -366,7 +519,7 @@ func (x *CreateConversionRequest) String() string {
 func (*CreateConversionRequest) ProtoMessage() {}
 
 func (x *CreateConversionRequest) ProtoReflect() protoreflect.Message {
-	mi := &file_officeconvertapi_v1_conversion_proto_msgTypes[2]
+	mi := &file_officeconvertapi_v1_conversion_proto_msgTypes[4]
 	if x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -379,7 +532,7 @@ func (x *CreateConversionRequest) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use CreateConversionRequest.ProtoReflect.Descriptor instead.
 func (*CreateConversionRequest) Descriptor() ([]byte, []int) {
-	return file_officeconvertapi_v1_conversion_proto_rawDescGZIP(), []int{2}
+	return file_officeconvertapi_v1_conversion_proto_rawDescGZIP(), []int{4}
 }
 
 func (x *CreateConversionRequest) GetSourceFilename() string {
@@ -389,11 +542,18 @@ func (x *CreateConversionRequest) GetSourceFilename() string {
 	return ""
 }
 
-func (x *CreateConversionRequest) GetResolution() ConversionResolution {
+func (x *CreateConversionRequest) GetFull() *SlideRasterOptions {
 	if x != nil {
-		return x.Resolution
+		return x.Full
 	}
-	return ConversionResolution_CONVERSION_RESOLUTION_UNSPECIFIED
+	return nil
+}
+
+func (x *CreateConversionRequest) GetThumbnail() *SlideRasterOptions {
+	if x != nil {
+		return x.Thumbnail
+	}
+	return nil
 }
 
 // CreateConversionResponse returns upload details for the session.
@@ -411,7 +571,7 @@ type CreateConversionResponse struct {
 
 func (x *CreateConversionResponse) Reset() {
 	*x = CreateConversionResponse{}
-	mi := &file_officeconvertapi_v1_conversion_proto_msgTypes[3]
+	mi := &file_officeconvertapi_v1_conversion_proto_msgTypes[5]
 	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 	ms.StoreMessageInfo(mi)
 }
@@ -423,7 +583,7 @@ func (x *CreateConversionResponse) String() string {
 func (*CreateConversionResponse) ProtoMessage() {}
 
 func (x *CreateConversionResponse) ProtoReflect() protoreflect.Message {
-	mi := &file_officeconvertapi_v1_conversion_proto_msgTypes[3]
+	mi := &file_officeconvertapi_v1_conversion_proto_msgTypes[5]
 	if x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -436,7 +596,7 @@ func (x *CreateConversionResponse) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use CreateConversionResponse.ProtoReflect.Descriptor instead.
 func (*CreateConversionResponse) Descriptor() ([]byte, []int) {
-	return file_officeconvertapi_v1_conversion_proto_rawDescGZIP(), []int{3}
+	return file_officeconvertapi_v1_conversion_proto_rawDescGZIP(), []int{5}
 }
 
 func (x *CreateConversionResponse) GetConversionId() string {
@@ -485,7 +645,7 @@ type StartConversionRequest struct {
 
 func (x *StartConversionRequest) Reset() {
 	*x = StartConversionRequest{}
-	mi := &file_officeconvertapi_v1_conversion_proto_msgTypes[4]
+	mi := &file_officeconvertapi_v1_conversion_proto_msgTypes[6]
 	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 	ms.StoreMessageInfo(mi)
 }
@@ -497,7 +657,7 @@ func (x *StartConversionRequest) String() string {
 func (*StartConversionRequest) ProtoMessage() {}
 
 func (x *StartConversionRequest) ProtoReflect() protoreflect.Message {
-	mi := &file_officeconvertapi_v1_conversion_proto_msgTypes[4]
+	mi := &file_officeconvertapi_v1_conversion_proto_msgTypes[6]
 	if x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -510,7 +670,7 @@ func (x *StartConversionRequest) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use StartConversionRequest.ProtoReflect.Descriptor instead.
 func (*StartConversionRequest) Descriptor() ([]byte, []int) {
-	return file_officeconvertapi_v1_conversion_proto_rawDescGZIP(), []int{4}
+	return file_officeconvertapi_v1_conversion_proto_rawDescGZIP(), []int{6}
 }
 
 func (x *StartConversionRequest) GetConversionId() string {
@@ -532,7 +692,7 @@ type StartConversionResponse struct {
 
 func (x *StartConversionResponse) Reset() {
 	*x = StartConversionResponse{}
-	mi := &file_officeconvertapi_v1_conversion_proto_msgTypes[5]
+	mi := &file_officeconvertapi_v1_conversion_proto_msgTypes[7]
 	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 	ms.StoreMessageInfo(mi)
 }
@@ -544,7 +704,7 @@ func (x *StartConversionResponse) String() string {
 func (*StartConversionResponse) ProtoMessage() {}
 
 func (x *StartConversionResponse) ProtoReflect() protoreflect.Message {
-	mi := &file_officeconvertapi_v1_conversion_proto_msgTypes[5]
+	mi := &file_officeconvertapi_v1_conversion_proto_msgTypes[7]
 	if x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -557,7 +717,7 @@ func (x *StartConversionResponse) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use StartConversionResponse.ProtoReflect.Descriptor instead.
 func (*StartConversionResponse) Descriptor() ([]byte, []int) {
-	return file_officeconvertapi_v1_conversion_proto_rawDescGZIP(), []int{5}
+	return file_officeconvertapi_v1_conversion_proto_rawDescGZIP(), []int{7}
 }
 
 func (x *StartConversionResponse) GetConversionId() string {
@@ -585,7 +745,7 @@ type GetConversionStatusRequest struct {
 
 func (x *GetConversionStatusRequest) Reset() {
 	*x = GetConversionStatusRequest{}
-	mi := &file_officeconvertapi_v1_conversion_proto_msgTypes[6]
+	mi := &file_officeconvertapi_v1_conversion_proto_msgTypes[8]
 	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 	ms.StoreMessageInfo(mi)
 }
@@ -597,7 +757,7 @@ func (x *GetConversionStatusRequest) String() string {
 func (*GetConversionStatusRequest) ProtoMessage() {}
 
 func (x *GetConversionStatusRequest) ProtoReflect() protoreflect.Message {
-	mi := &file_officeconvertapi_v1_conversion_proto_msgTypes[6]
+	mi := &file_officeconvertapi_v1_conversion_proto_msgTypes[8]
 	if x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -610,7 +770,7 @@ func (x *GetConversionStatusRequest) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use GetConversionStatusRequest.ProtoReflect.Descriptor instead.
 func (*GetConversionStatusRequest) Descriptor() ([]byte, []int) {
-	return file_officeconvertapi_v1_conversion_proto_rawDescGZIP(), []int{6}
+	return file_officeconvertapi_v1_conversion_proto_rawDescGZIP(), []int{8}
 }
 
 func (x *GetConversionStatusRequest) GetConversionId() string {
@@ -637,7 +797,7 @@ type GetConversionStatusResponse struct {
 
 func (x *GetConversionStatusResponse) Reset() {
 	*x = GetConversionStatusResponse{}
-	mi := &file_officeconvertapi_v1_conversion_proto_msgTypes[7]
+	mi := &file_officeconvertapi_v1_conversion_proto_msgTypes[9]
 	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 	ms.StoreMessageInfo(mi)
 }
@@ -649,7 +809,7 @@ func (x *GetConversionStatusResponse) String() string {
 func (*GetConversionStatusResponse) ProtoMessage() {}
 
 func (x *GetConversionStatusResponse) ProtoReflect() protoreflect.Message {
-	mi := &file_officeconvertapi_v1_conversion_proto_msgTypes[7]
+	mi := &file_officeconvertapi_v1_conversion_proto_msgTypes[9]
 	if x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -662,7 +822,7 @@ func (x *GetConversionStatusResponse) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use GetConversionStatusResponse.ProtoReflect.Descriptor instead.
 func (*GetConversionStatusResponse) Descriptor() ([]byte, []int) {
-	return file_officeconvertapi_v1_conversion_proto_rawDescGZIP(), []int{7}
+	return file_officeconvertapi_v1_conversion_proto_rawDescGZIP(), []int{9}
 }
 
 func (x *GetConversionStatusResponse) GetConversionId() string {
@@ -725,7 +885,7 @@ type GetSlideDeckRequest struct {
 
 func (x *GetSlideDeckRequest) Reset() {
 	*x = GetSlideDeckRequest{}
-	mi := &file_officeconvertapi_v1_conversion_proto_msgTypes[8]
+	mi := &file_officeconvertapi_v1_conversion_proto_msgTypes[10]
 	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 	ms.StoreMessageInfo(mi)
 }
@@ -737,7 +897,7 @@ func (x *GetSlideDeckRequest) String() string {
 func (*GetSlideDeckRequest) ProtoMessage() {}
 
 func (x *GetSlideDeckRequest) ProtoReflect() protoreflect.Message {
-	mi := &file_officeconvertapi_v1_conversion_proto_msgTypes[8]
+	mi := &file_officeconvertapi_v1_conversion_proto_msgTypes[10]
 	if x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -750,7 +910,7 @@ func (x *GetSlideDeckRequest) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use GetSlideDeckRequest.ProtoReflect.Descriptor instead.
 func (*GetSlideDeckRequest) Descriptor() ([]byte, []int) {
-	return file_officeconvertapi_v1_conversion_proto_rawDescGZIP(), []int{8}
+	return file_officeconvertapi_v1_conversion_proto_rawDescGZIP(), []int{10}
 }
 
 func (x *GetSlideDeckRequest) GetConversionId() string {
@@ -770,7 +930,7 @@ type GetSlideDeckResponse struct {
 
 func (x *GetSlideDeckResponse) Reset() {
 	*x = GetSlideDeckResponse{}
-	mi := &file_officeconvertapi_v1_conversion_proto_msgTypes[9]
+	mi := &file_officeconvertapi_v1_conversion_proto_msgTypes[11]
 	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 	ms.StoreMessageInfo(mi)
 }
@@ -782,7 +942,7 @@ func (x *GetSlideDeckResponse) String() string {
 func (*GetSlideDeckResponse) ProtoMessage() {}
 
 func (x *GetSlideDeckResponse) ProtoReflect() protoreflect.Message {
-	mi := &file_officeconvertapi_v1_conversion_proto_msgTypes[9]
+	mi := &file_officeconvertapi_v1_conversion_proto_msgTypes[11]
 	if x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -795,7 +955,7 @@ func (x *GetSlideDeckResponse) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use GetSlideDeckResponse.ProtoReflect.Descriptor instead.
 func (*GetSlideDeckResponse) Descriptor() ([]byte, []int) {
-	return file_officeconvertapi_v1_conversion_proto_rawDescGZIP(), []int{9}
+	return file_officeconvertapi_v1_conversion_proto_rawDescGZIP(), []int{11}
 }
 
 func (x *GetSlideDeckResponse) GetSlideDeck() *SlideDeck {
@@ -816,7 +976,7 @@ type DeleteConversionRequest struct {
 
 func (x *DeleteConversionRequest) Reset() {
 	*x = DeleteConversionRequest{}
-	mi := &file_officeconvertapi_v1_conversion_proto_msgTypes[10]
+	mi := &file_officeconvertapi_v1_conversion_proto_msgTypes[12]
 	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 	ms.StoreMessageInfo(mi)
 }
@@ -828,7 +988,7 @@ func (x *DeleteConversionRequest) String() string {
 func (*DeleteConversionRequest) ProtoMessage() {}
 
 func (x *DeleteConversionRequest) ProtoReflect() protoreflect.Message {
-	mi := &file_officeconvertapi_v1_conversion_proto_msgTypes[10]
+	mi := &file_officeconvertapi_v1_conversion_proto_msgTypes[12]
 	if x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -841,7 +1001,7 @@ func (x *DeleteConversionRequest) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use DeleteConversionRequest.ProtoReflect.Descriptor instead.
 func (*DeleteConversionRequest) Descriptor() ([]byte, []int) {
-	return file_officeconvertapi_v1_conversion_proto_rawDescGZIP(), []int{10}
+	return file_officeconvertapi_v1_conversion_proto_rawDescGZIP(), []int{12}
 }
 
 func (x *DeleteConversionRequest) GetConversionId() string {
@@ -863,7 +1023,7 @@ type DeleteConversionResponse struct {
 
 func (x *DeleteConversionResponse) Reset() {
 	*x = DeleteConversionResponse{}
-	mi := &file_officeconvertapi_v1_conversion_proto_msgTypes[11]
+	mi := &file_officeconvertapi_v1_conversion_proto_msgTypes[13]
 	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 	ms.StoreMessageInfo(mi)
 }
@@ -875,7 +1035,7 @@ func (x *DeleteConversionResponse) String() string {
 func (*DeleteConversionResponse) ProtoMessage() {}
 
 func (x *DeleteConversionResponse) ProtoReflect() protoreflect.Message {
-	mi := &file_officeconvertapi_v1_conversion_proto_msgTypes[11]
+	mi := &file_officeconvertapi_v1_conversion_proto_msgTypes[13]
 	if x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -888,7 +1048,7 @@ func (x *DeleteConversionResponse) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use DeleteConversionResponse.ProtoReflect.Descriptor instead.
 func (*DeleteConversionResponse) Descriptor() ([]byte, []int) {
-	return file_officeconvertapi_v1_conversion_proto_rawDescGZIP(), []int{11}
+	return file_officeconvertapi_v1_conversion_proto_rawDescGZIP(), []int{13}
 }
 
 func (x *DeleteConversionResponse) GetConversionId() string {
@@ -909,12 +1069,21 @@ var File_officeconvertapi_v1_conversion_proto protoreflect.FileDescriptor
 
 const file_officeconvertapi_v1_conversion_proto_rawDesc = "" +
 	"\n" +
-	"$officeconvertapi/v1/conversion.proto\x12\x13officeconvertapi.v1\x1a\x1fgoogle/protobuf/timestamp.proto\"[\n" +
+	"$officeconvertapi/v1/conversion.proto\x12\x13officeconvertapi.v1\x1a\x1fgoogle/protobuf/timestamp.proto\"-\n" +
+	"\x11JpegOutputOptions\x12\x18\n" +
+	"\aquality\x18\x01 \x01(\x05R\aquality\"\xa7\x01\n" +
+	"\x12SlideRasterOptions\x12I\n" +
+	"\n" +
+	"resolution\x18\x01 \x01(\x0e2).officeconvertapi.v1.ConversionResolutionR\n" +
+	"resolution\x12<\n" +
+	"\x04jpeg\x18\x02 \x01(\v2&.officeconvertapi.v1.JpegOutputOptionsH\x00R\x04jpegB\b\n" +
+	"\x06format\"\x8b\x01\n" +
 	"\x05Slide\x12\x14\n" +
 	"\x05index\x18\x01 \x01(\x05R\x05index\x12\x1f\n" +
 	"\vnotes_plain\x18\x02 \x01(\tR\n" +
 	"notesPlain\x12\x1b\n" +
-	"\timage_url\x18\x03 \x01(\tR\bimageUrl\"\xf6\x01\n" +
+	"\timage_url\x18\x03 \x01(\tR\bimageUrl\x12.\n" +
+	"\x13thumbnail_image_url\x18\x04 \x01(\tR\x11thumbnailImageUrl\"\xca\x02\n" +
 	"\tSlideDeck\x12#\n" +
 	"\rconversion_id\x18\x01 \x01(\tR\fconversionId\x12'\n" +
 	"\x0fsource_filename\x18\x02 \x01(\tR\x0esourceFilename\x122\n" +
@@ -922,12 +1091,13 @@ const file_officeconvertapi_v1_conversion_proto_rawDesc = "" +
 	"\n" +
 	"created_at\x18\x04 \x01(\v2\x1a.google.protobuf.TimestampR\tcreatedAt\x12\x14\n" +
 	"\x05width\x18\x05 \x01(\x05R\x05width\x12\x16\n" +
-	"\x06height\x18\x06 \x01(\x05R\x06height\"\x8d\x01\n" +
+	"\x06height\x18\x06 \x01(\x05R\x06height\x12'\n" +
+	"\x0fthumbnail_width\x18\a \x01(\x05R\x0ethumbnailWidth\x12)\n" +
+	"\x10thumbnail_height\x18\b \x01(\x05R\x0fthumbnailHeight\"\xc6\x01\n" +
 	"\x17CreateConversionRequest\x12'\n" +
-	"\x0fsource_filename\x18\x01 \x01(\tR\x0esourceFilename\x12I\n" +
-	"\n" +
-	"resolution\x18\x02 \x01(\x0e2).officeconvertapi.v1.ConversionResolutionR\n" +
-	"resolution\"\xea\x01\n" +
+	"\x0fsource_filename\x18\x01 \x01(\tR\x0esourceFilename\x12;\n" +
+	"\x04full\x18\x02 \x01(\v2'.officeconvertapi.v1.SlideRasterOptionsR\x04full\x12E\n" +
+	"\tthumbnail\x18\x03 \x01(\v2'.officeconvertapi.v1.SlideRasterOptionsR\tthumbnail\"\xea\x01\n" +
 	"\x18CreateConversionResponse\x12#\n" +
 	"\rconversion_id\x18\x01 \x01(\tR\fconversionId\x12#\n" +
 	"\rupload_bucket\x18\x02 \x01(\tR\fuploadBucket\x12*\n" +
@@ -1002,50 +1172,55 @@ func file_officeconvertapi_v1_conversion_proto_rawDescGZIP() []byte {
 }
 
 var file_officeconvertapi_v1_conversion_proto_enumTypes = make([]protoimpl.EnumInfo, 3)
-var file_officeconvertapi_v1_conversion_proto_msgTypes = make([]protoimpl.MessageInfo, 12)
+var file_officeconvertapi_v1_conversion_proto_msgTypes = make([]protoimpl.MessageInfo, 14)
 var file_officeconvertapi_v1_conversion_proto_goTypes = []any{
 	(ConversionStatus)(0),               // 0: officeconvertapi.v1.ConversionStatus
 	(ConversionPhase)(0),                // 1: officeconvertapi.v1.ConversionPhase
 	(ConversionResolution)(0),           // 2: officeconvertapi.v1.ConversionResolution
-	(*Slide)(nil),                       // 3: officeconvertapi.v1.Slide
-	(*SlideDeck)(nil),                   // 4: officeconvertapi.v1.SlideDeck
-	(*CreateConversionRequest)(nil),     // 5: officeconvertapi.v1.CreateConversionRequest
-	(*CreateConversionResponse)(nil),    // 6: officeconvertapi.v1.CreateConversionResponse
-	(*StartConversionRequest)(nil),      // 7: officeconvertapi.v1.StartConversionRequest
-	(*StartConversionResponse)(nil),     // 8: officeconvertapi.v1.StartConversionResponse
-	(*GetConversionStatusRequest)(nil),  // 9: officeconvertapi.v1.GetConversionStatusRequest
-	(*GetConversionStatusResponse)(nil), // 10: officeconvertapi.v1.GetConversionStatusResponse
-	(*GetSlideDeckRequest)(nil),         // 11: officeconvertapi.v1.GetSlideDeckRequest
-	(*GetSlideDeckResponse)(nil),        // 12: officeconvertapi.v1.GetSlideDeckResponse
-	(*DeleteConversionRequest)(nil),     // 13: officeconvertapi.v1.DeleteConversionRequest
-	(*DeleteConversionResponse)(nil),    // 14: officeconvertapi.v1.DeleteConversionResponse
-	(*timestamppb.Timestamp)(nil),       // 15: google.protobuf.Timestamp
+	(*JpegOutputOptions)(nil),           // 3: officeconvertapi.v1.JpegOutputOptions
+	(*SlideRasterOptions)(nil),          // 4: officeconvertapi.v1.SlideRasterOptions
+	(*Slide)(nil),                       // 5: officeconvertapi.v1.Slide
+	(*SlideDeck)(nil),                   // 6: officeconvertapi.v1.SlideDeck
+	(*CreateConversionRequest)(nil),     // 7: officeconvertapi.v1.CreateConversionRequest
+	(*CreateConversionResponse)(nil),    // 8: officeconvertapi.v1.CreateConversionResponse
+	(*StartConversionRequest)(nil),      // 9: officeconvertapi.v1.StartConversionRequest
+	(*StartConversionResponse)(nil),     // 10: officeconvertapi.v1.StartConversionResponse
+	(*GetConversionStatusRequest)(nil),  // 11: officeconvertapi.v1.GetConversionStatusRequest
+	(*GetConversionStatusResponse)(nil), // 12: officeconvertapi.v1.GetConversionStatusResponse
+	(*GetSlideDeckRequest)(nil),         // 13: officeconvertapi.v1.GetSlideDeckRequest
+	(*GetSlideDeckResponse)(nil),        // 14: officeconvertapi.v1.GetSlideDeckResponse
+	(*DeleteConversionRequest)(nil),     // 15: officeconvertapi.v1.DeleteConversionRequest
+	(*DeleteConversionResponse)(nil),    // 16: officeconvertapi.v1.DeleteConversionResponse
+	(*timestamppb.Timestamp)(nil),       // 17: google.protobuf.Timestamp
 }
 var file_officeconvertapi_v1_conversion_proto_depIdxs = []int32{
-	3,  // 0: officeconvertapi.v1.SlideDeck.slides:type_name -> officeconvertapi.v1.Slide
-	15, // 1: officeconvertapi.v1.SlideDeck.created_at:type_name -> google.protobuf.Timestamp
-	2,  // 2: officeconvertapi.v1.CreateConversionRequest.resolution:type_name -> officeconvertapi.v1.ConversionResolution
-	15, // 3: officeconvertapi.v1.CreateConversionResponse.expires_at:type_name -> google.protobuf.Timestamp
-	0,  // 4: officeconvertapi.v1.StartConversionResponse.status:type_name -> officeconvertapi.v1.ConversionStatus
-	0,  // 5: officeconvertapi.v1.GetConversionStatusResponse.status:type_name -> officeconvertapi.v1.ConversionStatus
-	15, // 6: officeconvertapi.v1.GetConversionStatusResponse.updated_at:type_name -> google.protobuf.Timestamp
-	1,  // 7: officeconvertapi.v1.GetConversionStatusResponse.phase:type_name -> officeconvertapi.v1.ConversionPhase
-	4,  // 8: officeconvertapi.v1.GetSlideDeckResponse.slide_deck:type_name -> officeconvertapi.v1.SlideDeck
-	5,  // 9: officeconvertapi.v1.ConversionService.CreateConversion:input_type -> officeconvertapi.v1.CreateConversionRequest
-	7,  // 10: officeconvertapi.v1.ConversionService.StartConversion:input_type -> officeconvertapi.v1.StartConversionRequest
-	9,  // 11: officeconvertapi.v1.ConversionService.GetConversionStatus:input_type -> officeconvertapi.v1.GetConversionStatusRequest
-	11, // 12: officeconvertapi.v1.ConversionService.GetSlideDeck:input_type -> officeconvertapi.v1.GetSlideDeckRequest
-	13, // 13: officeconvertapi.v1.ConversionService.DeleteConversion:input_type -> officeconvertapi.v1.DeleteConversionRequest
-	6,  // 14: officeconvertapi.v1.ConversionService.CreateConversion:output_type -> officeconvertapi.v1.CreateConversionResponse
-	8,  // 15: officeconvertapi.v1.ConversionService.StartConversion:output_type -> officeconvertapi.v1.StartConversionResponse
-	10, // 16: officeconvertapi.v1.ConversionService.GetConversionStatus:output_type -> officeconvertapi.v1.GetConversionStatusResponse
-	12, // 17: officeconvertapi.v1.ConversionService.GetSlideDeck:output_type -> officeconvertapi.v1.GetSlideDeckResponse
-	14, // 18: officeconvertapi.v1.ConversionService.DeleteConversion:output_type -> officeconvertapi.v1.DeleteConversionResponse
-	14, // [14:19] is the sub-list for method output_type
-	9,  // [9:14] is the sub-list for method input_type
-	9,  // [9:9] is the sub-list for extension type_name
-	9,  // [9:9] is the sub-list for extension extendee
-	0,  // [0:9] is the sub-list for field type_name
+	2,  // 0: officeconvertapi.v1.SlideRasterOptions.resolution:type_name -> officeconvertapi.v1.ConversionResolution
+	3,  // 1: officeconvertapi.v1.SlideRasterOptions.jpeg:type_name -> officeconvertapi.v1.JpegOutputOptions
+	5,  // 2: officeconvertapi.v1.SlideDeck.slides:type_name -> officeconvertapi.v1.Slide
+	17, // 3: officeconvertapi.v1.SlideDeck.created_at:type_name -> google.protobuf.Timestamp
+	4,  // 4: officeconvertapi.v1.CreateConversionRequest.full:type_name -> officeconvertapi.v1.SlideRasterOptions
+	4,  // 5: officeconvertapi.v1.CreateConversionRequest.thumbnail:type_name -> officeconvertapi.v1.SlideRasterOptions
+	17, // 6: officeconvertapi.v1.CreateConversionResponse.expires_at:type_name -> google.protobuf.Timestamp
+	0,  // 7: officeconvertapi.v1.StartConversionResponse.status:type_name -> officeconvertapi.v1.ConversionStatus
+	0,  // 8: officeconvertapi.v1.GetConversionStatusResponse.status:type_name -> officeconvertapi.v1.ConversionStatus
+	17, // 9: officeconvertapi.v1.GetConversionStatusResponse.updated_at:type_name -> google.protobuf.Timestamp
+	1,  // 10: officeconvertapi.v1.GetConversionStatusResponse.phase:type_name -> officeconvertapi.v1.ConversionPhase
+	6,  // 11: officeconvertapi.v1.GetSlideDeckResponse.slide_deck:type_name -> officeconvertapi.v1.SlideDeck
+	7,  // 12: officeconvertapi.v1.ConversionService.CreateConversion:input_type -> officeconvertapi.v1.CreateConversionRequest
+	9,  // 13: officeconvertapi.v1.ConversionService.StartConversion:input_type -> officeconvertapi.v1.StartConversionRequest
+	11, // 14: officeconvertapi.v1.ConversionService.GetConversionStatus:input_type -> officeconvertapi.v1.GetConversionStatusRequest
+	13, // 15: officeconvertapi.v1.ConversionService.GetSlideDeck:input_type -> officeconvertapi.v1.GetSlideDeckRequest
+	15, // 16: officeconvertapi.v1.ConversionService.DeleteConversion:input_type -> officeconvertapi.v1.DeleteConversionRequest
+	8,  // 17: officeconvertapi.v1.ConversionService.CreateConversion:output_type -> officeconvertapi.v1.CreateConversionResponse
+	10, // 18: officeconvertapi.v1.ConversionService.StartConversion:output_type -> officeconvertapi.v1.StartConversionResponse
+	12, // 19: officeconvertapi.v1.ConversionService.GetConversionStatus:output_type -> officeconvertapi.v1.GetConversionStatusResponse
+	14, // 20: officeconvertapi.v1.ConversionService.GetSlideDeck:output_type -> officeconvertapi.v1.GetSlideDeckResponse
+	16, // 21: officeconvertapi.v1.ConversionService.DeleteConversion:output_type -> officeconvertapi.v1.DeleteConversionResponse
+	17, // [17:22] is the sub-list for method output_type
+	12, // [12:17] is the sub-list for method input_type
+	12, // [12:12] is the sub-list for extension type_name
+	12, // [12:12] is the sub-list for extension extendee
+	0,  // [0:12] is the sub-list for field type_name
 }
 
 func init() { file_officeconvertapi_v1_conversion_proto_init() }
@@ -1053,13 +1228,16 @@ func file_officeconvertapi_v1_conversion_proto_init() {
 	if File_officeconvertapi_v1_conversion_proto != nil {
 		return
 	}
+	file_officeconvertapi_v1_conversion_proto_msgTypes[1].OneofWrappers = []any{
+		(*SlideRasterOptions_Jpeg)(nil),
+	}
 	type x struct{}
 	out := protoimpl.TypeBuilder{
 		File: protoimpl.DescBuilder{
 			GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
 			RawDescriptor: unsafe.Slice(unsafe.StringData(file_officeconvertapi_v1_conversion_proto_rawDesc), len(file_officeconvertapi_v1_conversion_proto_rawDesc)),
 			NumEnums:      3,
-			NumMessages:   12,
+			NumMessages:   14,
 			NumExtensions: 0,
 			NumServices:   1,
 		},
diff --git a/gen/python/officeconvertapi/v1/conversion_pb2.py b/gen/python/officeconvertapi/v1/conversion_pb2.py
index afe0050..acb3237 100644
--- a/gen/python/officeconvertapi/v1/conversion_pb2.py
+++ b/gen/python/officeconvertapi/v1/conversion_pb2.py
@@ -25,7 +25,7 @@ _sym_db = _symbol_database.Default()
 from google.protobuf import timestamp_pb2 as google_dot_protobuf_dot_timestamp__pb2
 
 
-DESCRIPTOR = _descriptor_pool.Default().AddSerializedFile(b'\n$officeconvertapi/v1/conversion.proto\x12\x13officeconvertapi.v1\x1a\x1fgoogle/protobuf/timestamp.proto\"[\n\x05Slide\x12\x14\n\x05index\x18\x01 \x01(\x05R\x05index\x12\x1f\n\x0bnotes_plain\x18\x02 \x01(\tR\nnotesPlain\x12\x1b\n\timage_url\x18\x03 \x01(\tR\x08imageUrl\"\xf6\x01\n\tSlideDeck\x12#\n\rconversion_id\x18\x01 \x01(\tR\x0c\x63onversionId\x12\'\n\x0fsource_filename\x18\x02 \x01(\tR\x0esourceFilename\x12\x32\n\x06slides\x18\x03 \x03(\x0b\x32\x1a.officeconvertapi.v1.SlideR\x06slides\x12\x39\n\ncreated_at\x18\x04 \x01(\x0b\x32\x1a.google.protobuf.TimestampR\tcreatedAt\x12\x14\n\x05width\x18\x05 \x01(\x05R\x05width\x12\x16\n\x06height\x18\x06 \x01(\x05R\x06height\"\x8d\x01\n\x17\x43reateConversionRequest\x12\'\n\x0fsource_filename\x18\x01 \x01(\tR\x0esourceFilename\x12I\n\nresolution\x18\x02 \x01(\x0e\x32).officeconvertapi.v1.ConversionResolutionR\nresolution\"\xea\x01\n\x18\x43reateConversionResponse\x12#\n\rconversion_id\x18\x01 \x01(\tR\x0c\x63onversionId\x12#\n\rupload_bucket\x18\x02 \x01(\tR\x0cuploadBucket\x12*\n\x11upload_object_key\x18\x03 \x01(\tR\x0fuploadObjectKey\x12\x1d\n\nupload_url\x18\x04 \x01(\tR\tuploadUrl\x12\x39\n\nexpires_at\x18\x05 \x01(\x0b\x32\x1a.google.protobuf.TimestampR\texpiresAt\"=\n\x16StartConversionRequest\x12#\n\rconversion_id\x18\x01 \x01(\tR\x0c\x63onversionId\"}\n\x17StartConversionResponse\x12#\n\rconversion_id\x18\x01 \x01(\tR\x0c\x63onversionId\x12=\n\x06status\x18\x02 \x01(\x0e\x32%.officeconvertapi.v1.ConversionStatusR\x06status\"A\n\x1aGetConversionStatusRequest\x12#\n\rconversion_id\x18\x01 \x01(\tR\x0c\x63onversionId\"\xeb\x02\n\x1bGetConversionStatusResponse\x12#\n\rconversion_id\x18\x01 \x01(\tR\x0c\x63onversionId\x12=\n\x06status\x18\x02 \x01(\x0e\x32%.officeconvertapi.v1.ConversionStatusR\x06status\x12#\n\rerror_message\x18\x03 \x01(\tR\x0c\x65rrorMessage\x12\x39\n\nupdated_at\x18\x04 \x01(\x0b\x32\x1a.google.protobuf.TimestampR\tupdatedAt\x12:\n\x05phase\x18\x05 \x01(\x0e\x32$.officeconvertapi.v1.ConversionPhaseR\x05phase\x12)\n\x10\x63urrent_progress\x18\x06 \x01(\x05R\x0f\x63urrentProgress\x12!\n\x0cmax_progress\x18\x07 \x01(\x05R\x0bmaxProgress\":\n\x13GetSlideDeckRequest\x12#\n\rconversion_id\x18\x01 \x01(\tR\x0c\x63onversionId\"U\n\x14GetSlideDeckResponse\x12=\n\nslide_deck\x18\x01 \x01(\x0b\x32\x1e.officeconvertapi.v1.SlideDeckR\tslideDeck\">\n\x17\x44\x65leteConversionRequest\x12#\n\rconversion_id\x18\x01 \x01(\tR\x0c\x63onversionId\"Y\n\x18\x44\x65leteConversionResponse\x12#\n\rconversion_id\x18\x01 \x01(\tR\x0c\x63onversionId\x12\x18\n\x07\x64\x65leted\x18\x02 \x01(\x08R\x07\x64\x65leted*\xb2\x01\n\x10\x43onversionStatus\x12!\n\x1d\x43ONVERSION_STATUS_UNSPECIFIED\x10\x00\x12\x1d\n\x19\x43ONVERSION_STATUS_PENDING\x10\x01\x12\x1d\n\x19\x43ONVERSION_STATUS_RUNNING\x10\x02\x12\x1f\n\x1b\x43ONVERSION_STATUS_SUCCEEDED\x10\x03\x12\x1c\n\x18\x43ONVERSION_STATUS_FAILED\x10\x04*\xe7\x01\n\x0f\x43onversionPhase\x12 \n\x1c\x43ONVERSION_PHASE_UNSPECIFIED\x10\x00\x12\x1d\n\x19\x43ONVERSION_PHASE_INACTIVE\x10\x01\x12%\n!CONVERSION_PHASE_EXTRACTING_NOTES\x10\x02\x12 \n\x1c\x43ONVERSION_PHASE_PPTX_TO_PDF\x10\x03\x12\"\n\x1e\x43ONVERSION_PHASE_PDF_TO_IMAGES\x10\x04\x12&\n\"CONVERSION_PHASE_UPLOADING_RESULTS\x10\x05*\xd6\x01\n\x14\x43onversionResolution\x12%\n!CONVERSION_RESOLUTION_UNSPECIFIED\x10\x00\x12\x1c\n\x18\x43ONVERSION_RESOLUTION_SD\x10\x01\x12\x1c\n\x18\x43ONVERSION_RESOLUTION_HD\x10\x02\x12\x1d\n\x19\x43ONVERSION_RESOLUTION_FHD\x10\x03\x12\x1d\n\x19\x43ONVERSION_RESOLUTION_QHD\x10\x04\x12\x1d\n\x19\x43ONVERSION_RESOLUTION_UHD\x10\x05\x32\xcc\x04\n\x11\x43onversionService\x12q\n\x10\x43reateConversion\x12,.officeconvertapi.v1.CreateConversionRequest\x1a-.officeconvertapi.v1.CreateConversionResponse\"\x00\x12n\n\x0fStartConversion\x12+.officeconvertapi.v1.StartConversionRequest\x1a,.officeconvertapi.v1.StartConversionResponse\"\x00\x12z\n\x13GetConversionStatus\x12/.officeconvertapi.v1.GetConversionStatusRequest\x1a\x30.officeconvertapi.v1.GetConversionStatusResponse\"\x00\x12\x65\n\x0cGetSlideDeck\x12(.officeconvertapi.v1.GetSlideDeckRequest\x1a).officeconvertapi.v1.GetSlideDeckResponse\"\x00\x12q\n\x10\x44\x65leteConversion\x12,.officeconvertapi.v1.DeleteConversionRequest\x1a-.officeconvertapi.v1.DeleteConversionResponse\"\x00\x42ZZXgitea.auvem.com/end-internal/officeconvert/gen/go/officeconvertapi/v1;officeconvertapiv1b\x06proto3')
+DESCRIPTOR = _descriptor_pool.Default().AddSerializedFile(b'\n$officeconvertapi/v1/conversion.proto\x12\x13officeconvertapi.v1\x1a\x1fgoogle/protobuf/timestamp.proto\"-\n\x11JpegOutputOptions\x12\x18\n\x07quality\x18\x01 \x01(\x05R\x07quality\"\xa7\x01\n\x12SlideRasterOptions\x12I\n\nresolution\x18\x01 \x01(\x0e\x32).officeconvertapi.v1.ConversionResolutionR\nresolution\x12<\n\x04jpeg\x18\x02 \x01(\x0b\x32&.officeconvertapi.v1.JpegOutputOptionsH\x00R\x04jpegB\x08\n\x06\x66ormat\"\x8b\x01\n\x05Slide\x12\x14\n\x05index\x18\x01 \x01(\x05R\x05index\x12\x1f\n\x0bnotes_plain\x18\x02 \x01(\tR\nnotesPlain\x12\x1b\n\timage_url\x18\x03 \x01(\tR\x08imageUrl\x12.\n\x13thumbnail_image_url\x18\x04 \x01(\tR\x11thumbnailImageUrl\"\xca\x02\n\tSlideDeck\x12#\n\rconversion_id\x18\x01 \x01(\tR\x0c\x63onversionId\x12\'\n\x0fsource_filename\x18\x02 \x01(\tR\x0esourceFilename\x12\x32\n\x06slides\x18\x03 \x03(\x0b\x32\x1a.officeconvertapi.v1.SlideR\x06slides\x12\x39\n\ncreated_at\x18\x04 \x01(\x0b\x32\x1a.google.protobuf.TimestampR\tcreatedAt\x12\x14\n\x05width\x18\x05 \x01(\x05R\x05width\x12\x16\n\x06height\x18\x06 \x01(\x05R\x06height\x12\'\n\x0fthumbnail_width\x18\x07 \x01(\x05R\x0ethumbnailWidth\x12)\n\x10thumbnail_height\x18\x08 \x01(\x05R\x0fthumbnailHeight\"\xc6\x01\n\x17\x43reateConversionRequest\x12\'\n\x0fsource_filename\x18\x01 \x01(\tR\x0esourceFilename\x12;\n\x04\x66ull\x18\x02 \x01(\x0b\x32\'.officeconvertapi.v1.SlideRasterOptionsR\x04\x66ull\x12\x45\n\tthumbnail\x18\x03 \x01(\x0b\x32\'.officeconvertapi.v1.SlideRasterOptionsR\tthumbnail\"\xea\x01\n\x18\x43reateConversionResponse\x12#\n\rconversion_id\x18\x01 \x01(\tR\x0c\x63onversionId\x12#\n\rupload_bucket\x18\x02 \x01(\tR\x0cuploadBucket\x12*\n\x11upload_object_key\x18\x03 \x01(\tR\x0fuploadObjectKey\x12\x1d\n\nupload_url\x18\x04 \x01(\tR\tuploadUrl\x12\x39\n\nexpires_at\x18\x05 \x01(\x0b\x32\x1a.google.protobuf.TimestampR\texpiresAt\"=\n\x16StartConversionRequest\x12#\n\rconversion_id\x18\x01 \x01(\tR\x0c\x63onversionId\"}\n\x17StartConversionResponse\x12#\n\rconversion_id\x18\x01 \x01(\tR\x0c\x63onversionId\x12=\n\x06status\x18\x02 \x01(\x0e\x32%.officeconvertapi.v1.ConversionStatusR\x06status\"A\n\x1aGetConversionStatusRequest\x12#\n\rconversion_id\x18\x01 \x01(\tR\x0c\x63onversionId\"\xeb\x02\n\x1bGetConversionStatusResponse\x12#\n\rconversion_id\x18\x01 \x01(\tR\x0c\x63onversionId\x12=\n\x06status\x18\x02 \x01(\x0e\x32%.officeconvertapi.v1.ConversionStatusR\x06status\x12#\n\rerror_message\x18\x03 \x01(\tR\x0c\x65rrorMessage\x12\x39\n\nupdated_at\x18\x04 \x01(\x0b\x32\x1a.google.protobuf.TimestampR\tupdatedAt\x12:\n\x05phase\x18\x05 \x01(\x0e\x32$.officeconvertapi.v1.ConversionPhaseR\x05phase\x12)\n\x10\x63urrent_progress\x18\x06 \x01(\x05R\x0f\x63urrentProgress\x12!\n\x0cmax_progress\x18\x07 \x01(\x05R\x0bmaxProgress\":\n\x13GetSlideDeckRequest\x12#\n\rconversion_id\x18\x01 \x01(\tR\x0c\x63onversionId\"U\n\x14GetSlideDeckResponse\x12=\n\nslide_deck\x18\x01 \x01(\x0b\x32\x1e.officeconvertapi.v1.SlideDeckR\tslideDeck\">\n\x17\x44\x65leteConversionRequest\x12#\n\rconversion_id\x18\x01 \x01(\tR\x0c\x63onversionId\"Y\n\x18\x44\x65leteConversionResponse\x12#\n\rconversion_id\x18\x01 \x01(\tR\x0c\x63onversionId\x12\x18\n\x07\x64\x65leted\x18\x02 \x01(\x08R\x07\x64\x65leted*\xb2\x01\n\x10\x43onversionStatus\x12!\n\x1d\x43ONVERSION_STATUS_UNSPECIFIED\x10\x00\x12\x1d\n\x19\x43ONVERSION_STATUS_PENDING\x10\x01\x12\x1d\n\x19\x43ONVERSION_STATUS_RUNNING\x10\x02\x12\x1f\n\x1b\x43ONVERSION_STATUS_SUCCEEDED\x10\x03\x12\x1c\n\x18\x43ONVERSION_STATUS_FAILED\x10\x04*\xe7\x01\n\x0f\x43onversionPhase\x12 \n\x1c\x43ONVERSION_PHASE_UNSPECIFIED\x10\x00\x12\x1d\n\x19\x43ONVERSION_PHASE_INACTIVE\x10\x01\x12%\n!CONVERSION_PHASE_EXTRACTING_NOTES\x10\x02\x12 \n\x1c\x43ONVERSION_PHASE_PPTX_TO_PDF\x10\x03\x12\"\n\x1e\x43ONVERSION_PHASE_PDF_TO_IMAGES\x10\x04\x12&\n\"CONVERSION_PHASE_UPLOADING_RESULTS\x10\x05*\xd6\x01\n\x14\x43onversionResolution\x12%\n!CONVERSION_RESOLUTION_UNSPECIFIED\x10\x00\x12\x1c\n\x18\x43ONVERSION_RESOLUTION_SD\x10\x01\x12\x1c\n\x18\x43ONVERSION_RESOLUTION_HD\x10\x02\x12\x1d\n\x19\x43ONVERSION_RESOLUTION_FHD\x10\x03\x12\x1d\n\x19\x43ONVERSION_RESOLUTION_QHD\x10\x04\x12\x1d\n\x19\x43ONVERSION_RESOLUTION_UHD\x10\x05\x32\xcc\x04\n\x11\x43onversionService\x12q\n\x10\x43reateConversion\x12,.officeconvertapi.v1.CreateConversionRequest\x1a-.officeconvertapi.v1.CreateConversionResponse\"\x00\x12n\n\x0fStartConversion\x12+.officeconvertapi.v1.StartConversionRequest\x1a,.officeconvertapi.v1.StartConversionResponse\"\x00\x12z\n\x13GetConversionStatus\x12/.officeconvertapi.v1.GetConversionStatusRequest\x1a\x30.officeconvertapi.v1.GetConversionStatusResponse\"\x00\x12\x65\n\x0cGetSlideDeck\x12(.officeconvertapi.v1.GetSlideDeckRequest\x1a).officeconvertapi.v1.GetSlideDeckResponse\"\x00\x12q\n\x10\x44\x65leteConversion\x12,.officeconvertapi.v1.DeleteConversionRequest\x1a-.officeconvertapi.v1.DeleteConversionResponse\"\x00\x42ZZXgitea.auvem.com/end-internal/officeconvert/gen/go/officeconvertapi/v1;officeconvertapiv1b\x06proto3')
 
 _globals = globals()
 _builder.BuildMessageAndEnumDescriptors(DESCRIPTOR, _globals)
@@ -33,36 +33,40 @@ _builder.BuildTopDescriptorsAndMessages(DESCRIPTOR, 'officeconvertapi.v1.convers
 if not _descriptor._USE_C_DESCRIPTORS:
   _globals['DESCRIPTOR']._loaded_options = None
   _globals['DESCRIPTOR']._serialized_options = b'ZXgitea.auvem.com/end-internal/officeconvert/gen/go/officeconvertapi/v1;officeconvertapiv1'
-  _globals['_CONVERSIONSTATUS']._serialized_start=1743
-  _globals['_CONVERSIONSTATUS']._serialized_end=1921
-  _globals['_CONVERSIONPHASE']._serialized_start=1924
-  _globals['_CONVERSIONPHASE']._serialized_end=2155
-  _globals['_CONVERSIONRESOLUTION']._serialized_start=2158
-  _globals['_CONVERSIONRESOLUTION']._serialized_end=2372
-  _globals['_SLIDE']._serialized_start=94
-  _globals['_SLIDE']._serialized_end=185
-  _globals['_SLIDEDECK']._serialized_start=188
-  _globals['_SLIDEDECK']._serialized_end=434
-  _globals['_CREATECONVERSIONREQUEST']._serialized_start=437
-  _globals['_CREATECONVERSIONREQUEST']._serialized_end=578
-  _globals['_CREATECONVERSIONRESPONSE']._serialized_start=581
-  _globals['_CREATECONVERSIONRESPONSE']._serialized_end=815
-  _globals['_STARTCONVERSIONREQUEST']._serialized_start=817
-  _globals['_STARTCONVERSIONREQUEST']._serialized_end=878
-  _globals['_STARTCONVERSIONRESPONSE']._serialized_start=880
-  _globals['_STARTCONVERSIONRESPONSE']._serialized_end=1005
-  _globals['_GETCONVERSIONSTATUSREQUEST']._serialized_start=1007
-  _globals['_GETCONVERSIONSTATUSREQUEST']._serialized_end=1072
-  _globals['_GETCONVERSIONSTATUSRESPONSE']._serialized_start=1075
-  _globals['_GETCONVERSIONSTATUSRESPONSE']._serialized_end=1438
-  _globals['_GETSLIDEDECKREQUEST']._serialized_start=1440
-  _globals['_GETSLIDEDECKREQUEST']._serialized_end=1498
-  _globals['_GETSLIDEDECKRESPONSE']._serialized_start=1500
-  _globals['_GETSLIDEDECKRESPONSE']._serialized_end=1585
-  _globals['_DELETECONVERSIONREQUEST']._serialized_start=1587
-  _globals['_DELETECONVERSIONREQUEST']._serialized_end=1649
-  _globals['_DELETECONVERSIONRESPONSE']._serialized_start=1651
-  _globals['_DELETECONVERSIONRESPONSE']._serialized_end=1740
-  _globals['_CONVERSIONSERVICE']._serialized_start=2375
-  _globals['_CONVERSIONSERVICE']._serialized_end=2963
+  _globals['_CONVERSIONSTATUS']._serialized_start=2150
+  _globals['_CONVERSIONSTATUS']._serialized_end=2328
+  _globals['_CONVERSIONPHASE']._serialized_start=2331
+  _globals['_CONVERSIONPHASE']._serialized_end=2562
+  _globals['_CONVERSIONRESOLUTION']._serialized_start=2565
+  _globals['_CONVERSIONRESOLUTION']._serialized_end=2779
+  _globals['_JPEGOUTPUTOPTIONS']._serialized_start=94
+  _globals['_JPEGOUTPUTOPTIONS']._serialized_end=139
+  _globals['_SLIDERASTEROPTIONS']._serialized_start=142
+  _globals['_SLIDERASTEROPTIONS']._serialized_end=309
+  _globals['_SLIDE']._serialized_start=312
+  _globals['_SLIDE']._serialized_end=451
+  _globals['_SLIDEDECK']._serialized_start=454
+  _globals['_SLIDEDECK']._serialized_end=784
+  _globals['_CREATECONVERSIONREQUEST']._serialized_start=787
+  _globals['_CREATECONVERSIONREQUEST']._serialized_end=985
+  _globals['_CREATECONVERSIONRESPONSE']._serialized_start=988
+  _globals['_CREATECONVERSIONRESPONSE']._serialized_end=1222
+  _globals['_STARTCONVERSIONREQUEST']._serialized_start=1224
+  _globals['_STARTCONVERSIONREQUEST']._serialized_end=1285
+  _globals['_STARTCONVERSIONRESPONSE']._serialized_start=1287
+  _globals['_STARTCONVERSIONRESPONSE']._serialized_end=1412
+  _globals['_GETCONVERSIONSTATUSREQUEST']._serialized_start=1414
+  _globals['_GETCONVERSIONSTATUSREQUEST']._serialized_end=1479
+  _globals['_GETCONVERSIONSTATUSRESPONSE']._serialized_start=1482
+  _globals['_GETCONVERSIONSTATUSRESPONSE']._serialized_end=1845
+  _globals['_GETSLIDEDECKREQUEST']._serialized_start=1847
+  _globals['_GETSLIDEDECKREQUEST']._serialized_end=1905
+  _globals['_GETSLIDEDECKRESPONSE']._serialized_start=1907
+  _globals['_GETSLIDEDECKRESPONSE']._serialized_end=1992
+  _globals['_DELETECONVERSIONREQUEST']._serialized_start=1994
+  _globals['_DELETECONVERSIONREQUEST']._serialized_end=2056
+  _globals['_DELETECONVERSIONRESPONSE']._serialized_start=2058
+  _globals['_DELETECONVERSIONRESPONSE']._serialized_end=2147
+  _globals['_CONVERSIONSERVICE']._serialized_start=2782
+  _globals['_CONVERSIONSERVICE']._serialized_end=3370
 # @@protoc_insertion_point(module_scope)
diff --git a/gen/python/officeconvertapi/v1/conversion_pb2.pyi b/gen/python/officeconvertapi/v1/conversion_pb2.pyi
index fc5f083..645c468 100644
--- a/gen/python/officeconvertapi/v1/conversion_pb2.pyi
+++ b/gen/python/officeconvertapi/v1/conversion_pb2.pyi
@@ -53,39 +53,61 @@ CONVERSION_RESOLUTION_FHD: ConversionResolution
 CONVERSION_RESOLUTION_QHD: ConversionResolution
 CONVERSION_RESOLUTION_UHD: ConversionResolution
 
+class JpegOutputOptions(_message.Message):
+    __slots__ = ("quality",)
+    QUALITY_FIELD_NUMBER: _ClassVar[int]
+    quality: int
+    def __init__(self, quality: _Optional[int] = ...) -> None: ...
+
+class SlideRasterOptions(_message.Message):
+    __slots__ = ("resolution", "jpeg")
+    RESOLUTION_FIELD_NUMBER: _ClassVar[int]
+    JPEG_FIELD_NUMBER: _ClassVar[int]
+    resolution: ConversionResolution
+    jpeg: JpegOutputOptions
+    def __init__(self, resolution: _Optional[_Union[ConversionResolution, str]] = ..., jpeg: _Optional[_Union[JpegOutputOptions, _Mapping]] = ...) -> None: ...
+
 class Slide(_message.Message):
-    __slots__ = ("index", "notes_plain", "image_url")
+    __slots__ = ("index", "notes_plain", "image_url", "thumbnail_image_url")
     INDEX_FIELD_NUMBER: _ClassVar[int]
     NOTES_PLAIN_FIELD_NUMBER: _ClassVar[int]
     IMAGE_URL_FIELD_NUMBER: _ClassVar[int]
+    THUMBNAIL_IMAGE_URL_FIELD_NUMBER: _ClassVar[int]
     index: int
     notes_plain: str
     image_url: str
-    def __init__(self, index: _Optional[int] = ..., notes_plain: _Optional[str] = ..., image_url: _Optional[str] = ...) -> None: ...
+    thumbnail_image_url: str
+    def __init__(self, index: _Optional[int] = ..., notes_plain: _Optional[str] = ..., image_url: _Optional[str] = ..., thumbnail_image_url: _Optional[str] = ...) -> None: ...
 
 class SlideDeck(_message.Message):
-    __slots__ = ("conversion_id", "source_filename", "slides", "created_at", "width", "height")
+    __slots__ = ("conversion_id", "source_filename", "slides", "created_at", "width", "height", "thumbnail_width", "thumbnail_height")
     CONVERSION_ID_FIELD_NUMBER: _ClassVar[int]
     SOURCE_FILENAME_FIELD_NUMBER: _ClassVar[int]
     SLIDES_FIELD_NUMBER: _ClassVar[int]
     CREATED_AT_FIELD_NUMBER: _ClassVar[int]
     WIDTH_FIELD_NUMBER: _ClassVar[int]
     HEIGHT_FIELD_NUMBER: _ClassVar[int]
+    THUMBNAIL_WIDTH_FIELD_NUMBER: _ClassVar[int]
+    THUMBNAIL_HEIGHT_FIELD_NUMBER: _ClassVar[int]
     conversion_id: str
     source_filename: str
     slides: _containers.RepeatedCompositeFieldContainer[Slide]
     created_at: _timestamp_pb2.Timestamp
     width: int
     height: int
-    def __init__(self, conversion_id: _Optional[str] = ..., source_filename: _Optional[str] = ..., slides: _Optional[_Iterable[_Union[Slide, _Mapping]]] = ..., created_at: _Optional[_Union[datetime.datetime, _timestamp_pb2.Timestamp, _Mapping]] = ..., width: _Optional[int] = ..., height: _Optional[int] = ...) -> None: ...
+    thumbnail_width: int
+    thumbnail_height: int
+    def __init__(self, conversion_id: _Optional[str] = ..., source_filename: _Optional[str] = ..., slides: _Optional[_Iterable[_Union[Slide, _Mapping]]] = ..., created_at: _Optional[_Union[datetime.datetime, _timestamp_pb2.Timestamp, _Mapping]] = ..., width: _Optional[int] = ..., height: _Optional[int] = ..., thumbnail_width: _Optional[int] = ..., thumbnail_height: _Optional[int] = ...) -> None: ...
 
 class CreateConversionRequest(_message.Message):
-    __slots__ = ("source_filename", "resolution")
+    __slots__ = ("source_filename", "full", "thumbnail")
     SOURCE_FILENAME_FIELD_NUMBER: _ClassVar[int]
-    RESOLUTION_FIELD_NUMBER: _ClassVar[int]
+    FULL_FIELD_NUMBER: _ClassVar[int]
+    THUMBNAIL_FIELD_NUMBER: _ClassVar[int]
     source_filename: str
-    resolution: ConversionResolution
-    def __init__(self, source_filename: _Optional[str] = ..., resolution: _Optional[_Union[ConversionResolution, str]] = ...) -> None: ...
+    full: SlideRasterOptions
+    thumbnail: SlideRasterOptions
+    def __init__(self, source_filename: _Optional[str] = ..., full: _Optional[_Union[SlideRasterOptions, _Mapping]] = ..., thumbnail: _Optional[_Union[SlideRasterOptions, _Mapping]] = ...) -> None: ...
 
 class CreateConversionResponse(_message.Message):
     __slots__ = ("conversion_id", "upload_bucket", "upload_object_key", "upload_url", "expires_at")
diff --git a/proto/officeconvertapi/v1/conversion.proto b/proto/officeconvertapi/v1/conversion.proto
index d35234b..717fbe3 100644
--- a/proto/officeconvertapi/v1/conversion.proto
+++ b/proto/officeconvertapi/v1/conversion.proto
@@ -53,11 +53,29 @@ enum ConversionResolution {
   CONVERSION_RESOLUTION_UHD = 5;
 }
 
+// JpegOutputOptions configures JPEG-specific encoding controls.
+message JpegOutputOptions {
+  // JPEG quality from 1..100. 0 means server default.
+  int32 quality = 1;
+}
+
+// SlideRasterOptions defines rendering settings for a raster output tier.
+message SlideRasterOptions {
+  // Output resolution preset. UNSPECIFIED means server default for the tier.
+  ConversionResolution resolution = 1;
+  oneof format {
+    JpegOutputOptions jpeg = 2;
+  }
+}
+
 // Slide contains extracted notes and the rendered image URL for one slide.
 message Slide {
   int32 index = 1;
   string notes_plain = 2;
+  // Full-size rendered image URL.
   string image_url = 3;
+  // Thumbnail rendered image URL.
+  string thumbnail_image_url = 4;
 }
 
 // SlideDeck is the final structured conversion artifact.
@@ -67,14 +85,21 @@ message SlideDeck {
   string source_filename = 2;
   repeated Slide slides = 3;
   google.protobuf.Timestamp created_at = 4;
+  // Full-size raster width in pixels.
   int32 width = 5;
+  // Full-size raster height in pixels.
   int32 height = 6;
+  // Thumbnail raster width in pixels.
+  int32 thumbnail_width = 7;
+  // Thumbnail raster height in pixels.
+  int32 thumbnail_height = 8;
 }
 
 // CreateConversionRequest starts a conversion session.
 message CreateConversionRequest {
   string source_filename = 1;
-  ConversionResolution resolution = 2;
+  SlideRasterOptions full = 2;
+  SlideRasterOptions thumbnail = 3;
 }
 
 // CreateConversionResponse returns upload details for the session.
diff --git a/python/packages/officeconvert/src/officeconvert/conversion.py b/python/packages/officeconvert/src/officeconvert/conversion.py
index 65f609d..effcb60 100644
--- a/python/packages/officeconvert/src/officeconvert/conversion.py
+++ b/python/packages/officeconvert/src/officeconvert/conversion.py
@@ -19,6 +19,7 @@ class SlideArtifact:
 
     index: int
     image_path: Path
+    thumbnail_path: Path
     notes_plain: str
 
 
@@ -30,6 +31,8 @@ class SlideDeckResult:
     slides: list[SlideArtifact]
     width: int
     height: int
+    thumbnail_width: int
+    thumbnail_height: int
     inferred_dpi: int
     pptx_to_pdf_timeout_s: int
     pdf_to_images_timeout_s: int
@@ -133,6 +136,7 @@ def render_pdf_to_images(
     target_width: int | None = None,
     target_height: int | None = None,
     image_format: str = "png",
+    jpeg_quality: int | None = None,
     timeout_s: int = 120,
     total_pages: int | None = None,
     operation_timeout_s: int | None = None,
@@ -162,6 +166,15 @@ def render_pdf_to_images(
         raise ValueError("target_width must be greater than zero")
     if target_height is not None and target_height <= 0:
         raise ValueError("target_height must be greater than zero")
+    normalized_image_format = _normalize_image_format(image_format)
+    output_suffix = _image_output_suffix(normalized_image_format)
+    normalized_jpeg_quality = _normalize_jpeg_quality(jpeg_quality)
+    jpeg_options_args: list[str] = []
+    if normalized_jpeg_quality is not None and normalized_image_format in {
+        "jpeg",
+        "jpegcmyk",
+    }:
+        jpeg_options_args = ["-jpegopt", f"quality={normalized_jpeg_quality}"]
 
     out_dir.mkdir(parents=True, exist_ok=True)
     scale_args: list[str] = []
@@ -174,7 +187,8 @@ def render_pdf_to_images(
             "-r",
             str(dpi),
             *scale_args,
-            f"-{image_format}",
+            *jpeg_options_args,
+            f"-{normalized_image_format}",
             str(pdf_path.resolve()),
             str(prefix_path),
         ]
@@ -198,7 +212,7 @@ def render_pdf_to_images(
             raise RuntimeError(
                 f"Poppler rasterization failed: {completed.stderr.strip() or completed.stdout.strip()}"
             )
-        images = sorted(out_dir.glob(f"slide-*.{image_format}"))
+        images = sorted(out_dir.glob(f"slide-*.{output_suffix}"))
     else:
         if total_pages < 0:
             raise ValueError("total_pages must be zero or greater")
@@ -210,7 +224,8 @@ def render_pdf_to_images(
                 "-r",
                 str(dpi),
                 *scale_args,
-                f"-{image_format}",
+                *jpeg_options_args,
+                f"-{normalized_image_format}",
                 "-f",
                 str(page_index),
                 "-l",
@@ -246,7 +261,7 @@ def render_pdf_to_images(
                     "Poppler rasterization failed on page "
                     f"{page_index}: {completed.stderr.strip() or completed.stdout.strip()}"
                 )
-            image_path = page_prefix.with_suffix(f".{image_format}")
+            image_path = page_prefix.with_suffix(f".{output_suffix}")
             if not image_path.exists():
                 raise RuntimeError(
                     f"Poppler did not create expected page image: {image_path}"
@@ -289,8 +304,10 @@ def convert_pptx_to_slidedeck(
     pptx_path: Path,
     work_dir: Path,
     *,
-    resolution: str = RESOLUTION_FHD,
-    image_format: str = "png",
+    full_resolution: str = RESOLUTION_FHD,
+    thumbnail_resolution: str = RESOLUTION_SD,
+    full_jpeg_quality: int | None = None,
+    thumbnail_jpeg_quality: int | None = None,
     pptx_to_pdf_timeout_s: int = 180,
     pdf_to_images_timeout_s: int = 1800,
     pptx_to_pdf_base_timeout_s: int = 45,
@@ -308,8 +325,10 @@ def convert_pptx_to_slidedeck(
     Args:
         pptx_path: Source `.pptx` path.
         work_dir: Scratch directory for generated outputs.
-        resolution: Output resolution preset (`sd`, `hd`, `fhd`, `qhd`, `uhd`).
-        image_format: Output image format accepted by `pdftoppm`.
+        full_resolution: Full-size output resolution preset (`sd`, `hd`, `fhd`, `qhd`, `uhd`).
+        thumbnail_resolution: Thumbnail output resolution preset (`sd`, `hd`, `fhd`, `qhd`, `uhd`).
+        full_jpeg_quality: Full-size JPEG quality (`1..100`); `None`/`0` means default.
+        thumbnail_jpeg_quality: Thumbnail JPEG quality (`1..100`); `None`/`0` means default.
         pptx_to_pdf_timeout_s: Timeout in seconds for the LibreOffice subprocess.
         pdf_to_images_timeout_s: Timeout in seconds for the Poppler subprocess.
 
@@ -322,7 +341,8 @@ def convert_pptx_to_slidedeck(
     work_dir = work_dir.resolve()
     work_dir.mkdir(parents=True, exist_ok=True)
     pdf_path = work_dir / f"{pptx_path.stem}.pdf"
-    image_dir = work_dir / "slides"
+    full_image_dir = work_dir / "slides_full"
+    thumbnail_image_dir = work_dir / "slides_thumb"
 
     _emit_progress(progress_callback, PHASE_EXTRACTING_NOTES, 0, 1)
     notes = extract_slide_notes(pptx_path)
@@ -331,7 +351,12 @@ def convert_pptx_to_slidedeck(
     output_width, output_height = _infer_output_dimensions_from_slide_size(
         slide_width=slide_width,
         slide_height=slide_height,
-        resolution=resolution,
+        resolution=full_resolution,
+    )
+    thumbnail_width, thumbnail_height = _infer_output_dimensions_from_slide_size(
+        slide_width=slide_width,
+        slide_height=slide_height,
+        resolution=thumbnail_resolution,
     )
     inferred_dpi = infer_minimum_raster_dpi(
         slide_width_emu=slide_width,
@@ -339,6 +364,12 @@ def convert_pptx_to_slidedeck(
         output_width_px=output_width,
         output_height_px=output_height,
     )
+    thumbnail_inferred_dpi = infer_minimum_raster_dpi(
+        slide_width_emu=slide_width,
+        slide_height_emu=slide_height,
+        output_width_px=thumbnail_width,
+        output_height_px=thumbnail_height,
+    )
     slide_count = len(notes)
     pptx_to_pdf_timeout = _compute_adaptive_timeout(
         slide_count=slide_count,
@@ -347,7 +378,7 @@ def convert_pptx_to_slidedeck(
         per_slide_timeout_s=pptx_to_pdf_per_slide_timeout_s,
     )
     pdf_to_images_timeout = _compute_adaptive_timeout(
-        slide_count=slide_count,
+        slide_count=slide_count * 2,
         timeout_cap_s=pdf_to_images_timeout_s,
         base_timeout_s=pdf_to_images_base_timeout_s,
         per_slide_timeout_s=pdf_to_images_per_slide_timeout_s,
@@ -357,34 +388,43 @@ def convert_pptx_to_slidedeck(
     convert_pptx_to_pdf(pptx_path, pdf_path, timeout_s=pptx_to_pdf_timeout)
     _emit_progress(progress_callback, PHASE_PPTX_TO_PDF, 1, 1)
 
-    _emit_progress(progress_callback, PHASE_PDF_TO_IMAGES, 0, slide_count)
+    raster_steps = slide_count * 2
+    _emit_progress(progress_callback, PHASE_PDF_TO_IMAGES, 0, raster_steps)
     pdf_to_images_page_timeout = _compute_page_timeout(
         total_timeout_s=pdf_to_images_timeout,
-        page_count=slide_count,
+        page_count=raster_steps,
         base_timeout_s=pdf_to_images_base_timeout_s,
     )
     logger.info(
-        "Conversion plan source=%s slides=%d inferred_dpi=%d image_format=%s "
-        "resolution=%s output_size=%dx%d "
+        "Conversion plan source=%s slides=%d image_format=%s "
+        "full[resolution=%s size=%dx%d dpi=%d jpeg_quality=%s] "
+        "thumbnail[resolution=%s size=%dx%d dpi=%d jpeg_quality=%s] "
         "computed_timeouts_s[pptx_to_pdf_total=%d,pdf_to_images_total=%d,pdf_to_images_per_page=%d]",
         pptx_path.name,
         slide_count,
-        inferred_dpi,
-        image_format,
-        resolution,
+        "jpeg",
+        full_resolution,
         output_width,
         output_height,
+        inferred_dpi,
+        str(full_jpeg_quality if full_jpeg_quality is not None else "default"),
+        thumbnail_resolution,
+        thumbnail_width,
+        thumbnail_height,
+        thumbnail_inferred_dpi,
+        str(thumbnail_jpeg_quality if thumbnail_jpeg_quality is not None else "default"),
         pptx_to_pdf_timeout,
         pdf_to_images_timeout,
         pdf_to_images_page_timeout,
     )
-    image_paths = render_pdf_to_images(
+    full_image_paths = render_pdf_to_images(
         pdf_path,
-        image_dir,
+        full_image_dir,
         dpi=inferred_dpi,
         target_width=output_width,
         target_height=output_height,
-        image_format=image_format,
+        image_format="jpeg",
+        jpeg_quality=full_jpeg_quality,
         timeout_s=pdf_to_images_page_timeout,
         total_pages=slide_count,
         operation_timeout_s=pdf_to_images_timeout,
@@ -395,22 +435,55 @@ def convert_pptx_to_slidedeck(
             max_pages,
         ),
     )
+    thumbnail_image_paths = render_pdf_to_images(
+        pdf_path,
+        thumbnail_image_dir,
+        dpi=thumbnail_inferred_dpi,
+        target_width=thumbnail_width,
+        target_height=thumbnail_height,
+        image_format="jpeg",
+        jpeg_quality=thumbnail_jpeg_quality,
+        timeout_s=pdf_to_images_page_timeout,
+        total_pages=slide_count,
+        operation_timeout_s=pdf_to_images_timeout,
+        page_progress_callback=lambda current, max_pages: _emit_progress(
+            progress_callback,
+            PHASE_PDF_TO_IMAGES,
+            slide_count + current,
+            slide_count + max_pages,
+        ),
+    )
 
-    if len(image_paths) != len(notes):
+    if len(full_image_paths) != len(notes):
         raise ValueError(
-            "rendered slide count does not match note count: "
-            f"{len(image_paths)} image(s) vs {len(notes)} note entries"
+            "rendered full-size slide count does not match note count: "
+            f"{len(full_image_paths)} image(s) vs {len(notes)} note entries"
+        )
+    if len(thumbnail_image_paths) != len(notes):
+        raise ValueError(
+            "rendered thumbnail slide count does not match note count: "
+            f"{len(thumbnail_image_paths)} image(s) vs {len(notes)} note entries"
         )
 
     slides = [
-        SlideArtifact(index=index, image_path=image_path, notes_plain=note)
-        for index, (image_path, note) in enumerate(zip(image_paths, notes), start=1)
+        SlideArtifact(
+            index=index,
+            image_path=image_path,
+            thumbnail_path=thumbnail_path,
+            notes_plain=note,
+        )
+        for index, (image_path, thumbnail_path, note) in enumerate(
+            zip(full_image_paths, thumbnail_image_paths, notes),
+            start=1,
+        )
     ]
     return SlideDeckResult(
         source_filename=pptx_path.name,
         slides=slides,
         width=output_width,
         height=output_height,
+        thumbnail_width=thumbnail_width,
+        thumbnail_height=thumbnail_height,
         inferred_dpi=inferred_dpi,
         pptx_to_pdf_timeout_s=pptx_to_pdf_timeout,
         pdf_to_images_timeout_s=pdf_to_images_timeout,
@@ -511,6 +584,30 @@ def _compute_page_timeout(
     return max(base_timeout_s, timeout)
 
 
+def _normalize_image_format(image_format: str) -> str:
+    """Normalize image format aliases accepted by Poppler."""
+    normalized = image_format.strip().lower()
+    if normalized == "jpg":
+        return "jpeg"
+    return normalized
+
+
+def _image_output_suffix(image_format: str) -> str:
+    """Return output filename suffix for a normalized Poppler image format."""
+    if image_format in {"jpeg", "jpegcmyk"}:
+        return "jpg"
+    return image_format
+
+
+def _normalize_jpeg_quality(jpeg_quality: int | None) -> int | None:
+    """Normalize optional JPEG quality; 0 means server/default quality."""
+    if jpeg_quality is None or jpeg_quality == 0:
+        return None
+    if 1 <= jpeg_quality <= 100:
+        return jpeg_quality
+    raise ValueError("jpeg_quality must be 0 or between 1 and 100")
+
+
 def _emit_progress(
     progress_callback: ProgressCallback | None,
     phase: str,
diff --git a/python/packages/server/src/officeconvert_server/models.py b/python/packages/server/src/officeconvert_server/models.py
index 6b1d6e2..fa94f83 100644
--- a/python/packages/server/src/officeconvert_server/models.py
+++ b/python/packages/server/src/officeconvert_server/models.py
@@ -19,7 +19,10 @@ class ConversionSession:
 
     conversion_id: str
     source_filename: str
-    resolution: conversion_pb2.ConversionResolution
+    full_resolution: conversion_pb2.ConversionResolution
+    thumbnail_resolution: conversion_pb2.ConversionResolution
+    full_jpeg_quality: int
+    thumbnail_jpeg_quality: int
     bucket_name: str
     upload_object_key: str
     status: conversion_pb2.ConversionStatus
diff --git a/python/packages/server/src/officeconvert_server/service.py b/python/packages/server/src/officeconvert_server/service.py
index 8093446..ceb8170 100644
--- a/python/packages/server/src/officeconvert_server/service.py
+++ b/python/packages/server/src/officeconvert_server/service.py
@@ -45,6 +45,10 @@ _RESOLUTION_PRESET_BY_PROTO = {
     conversion_pb2.CONVERSION_RESOLUTION_QHD: RESOLUTION_QHD,
     conversion_pb2.CONVERSION_RESOLUTION_UHD: RESOLUTION_UHD,
 }
+_DEFAULT_FULL_RESOLUTION = conversion_pb2.CONVERSION_RESOLUTION_FHD
+_DEFAULT_THUMBNAIL_RESOLUTION = conversion_pb2.CONVERSION_RESOLUTION_SD
+_DEFAULT_FULL_JPEG_QUALITY = 85
+_DEFAULT_THUMBNAIL_JPEG_QUALITY = 75
 
 
 class ConversionServiceImpl(conversion_connect.ConversionService):
@@ -69,11 +73,18 @@ class ConversionServiceImpl(conversion_connect.ConversionService):
             raise ConnectError(Code.INVALID_ARGUMENT, "source_filename is required")
         if not source_filename.lower().endswith(".pptx"):
             raise ConnectError(Code.INVALID_ARGUMENT, "only .pptx input is supported")
-        resolution = request.resolution
-        if resolution == conversion_pb2.CONVERSION_RESOLUTION_UNSPECIFIED:
-            resolution = conversion_pb2.CONVERSION_RESOLUTION_FHD
-        if resolution not in _RESOLUTION_PRESET_BY_PROTO:
-            raise ConnectError(Code.INVALID_ARGUMENT, "resolution is invalid")
+        full_resolution, full_jpeg_quality = self._resolve_raster_options(
+            request.full,
+            default_resolution=_DEFAULT_FULL_RESOLUTION,
+            default_jpeg_quality=_DEFAULT_FULL_JPEG_QUALITY,
+            field_name="full",
+        )
+        thumbnail_resolution, thumbnail_jpeg_quality = self._resolve_raster_options(
+            request.thumbnail,
+            default_resolution=_DEFAULT_THUMBNAIL_RESOLUTION,
+            default_jpeg_quality=_DEFAULT_THUMBNAIL_JPEG_QUALITY,
+            field_name="thumbnail",
+        )
 
         ksuid = Ksuid()
         conversion_id = str(ksuid)
@@ -109,7 +120,10 @@ class ConversionServiceImpl(conversion_connect.ConversionService):
         session = ConversionSession(
             conversion_id=conversion_id,
             source_filename=source_filename,
-            resolution=resolution,
+            full_resolution=full_resolution,
+            thumbnail_resolution=thumbnail_resolution,
+            full_jpeg_quality=full_jpeg_quality,
+            thumbnail_jpeg_quality=thumbnail_jpeg_quality,
             bucket_name=bucket_name,
             upload_object_key=upload_key,
             status=conversion_pb2.CONVERSION_STATUS_PENDING,
@@ -226,11 +240,15 @@ class ConversionServiceImpl(conversion_connect.ConversionService):
         """Execute conversion flow and persist terminal state in memory."""
         started_at = time.monotonic()
         logger.info(
-            "Starting conversion conversion_id=%s source_filename=%s resolution=%s "
+            "Starting conversion conversion_id=%s source_filename=%s "
+            "full[resolution=%s,jpeg_quality=%d] thumbnail[resolution=%s,jpeg_quality=%d] "
             "timeout_caps_s[pptx_to_pdf_total=%d,pdf_to_images_total=%d]",
             session.conversion_id,
             session.source_filename,
-            conversion_pb2.ConversionResolution.Name(session.resolution),
+            conversion_pb2.ConversionResolution.Name(session.full_resolution),
+            session.full_jpeg_quality,
+            conversion_pb2.ConversionResolution.Name(session.thumbnail_resolution),
+            session.thumbnail_jpeg_quality,
             self._config.conversion_pptx_to_pdf_timeout_seconds,
             self._config.conversion_pdf_to_images_timeout_seconds,
         )
@@ -250,7 +268,12 @@ class ConversionServiceImpl(conversion_connect.ConversionService):
                 convert_pptx_to_slidedeck,
                 source_path,
                 work_dir,
-                resolution=_RESOLUTION_PRESET_BY_PROTO[session.resolution],
+                full_resolution=_RESOLUTION_PRESET_BY_PROTO[session.full_resolution],
+                thumbnail_resolution=_RESOLUTION_PRESET_BY_PROTO[
+                    session.thumbnail_resolution
+                ],
+                full_jpeg_quality=session.full_jpeg_quality,
+                thumbnail_jpeg_quality=session.thumbnail_jpeg_quality,
                 pptx_to_pdf_timeout_s=self._config.conversion_pptx_to_pdf_timeout_seconds,
                 pdf_to_images_timeout_s=self._config.conversion_pdf_to_images_timeout_seconds,
                 pptx_to_pdf_base_timeout_s=self._config.conversion_pptx_to_pdf_base_timeout_seconds,
@@ -266,14 +289,21 @@ class ConversionServiceImpl(conversion_connect.ConversionService):
             )
             logger.info(
                 "Resolved conversion plan conversion_id=%s source_filename=%s "
-                "resolution=%s inferred_dpi=%d output_size=%dx%d "
+                "full[resolution=%s,size=%dx%d,jpeg_quality=%d] "
+                "thumbnail[resolution=%s,size=%dx%d,jpeg_quality=%d] "
+                "inferred_dpi=%d "
                 "computed_timeouts_s[pptx_to_pdf_total=%d,pdf_to_images_total=%d,pdf_to_images_per_page=%d]",
                 session.conversion_id,
                 session.source_filename,
-                conversion_pb2.ConversionResolution.Name(session.resolution),
-                result.inferred_dpi,
+                conversion_pb2.ConversionResolution.Name(session.full_resolution),
                 result.width,
                 result.height,
+                session.full_jpeg_quality,
+                conversion_pb2.ConversionResolution.Name(session.thumbnail_resolution),
+                result.thumbnail_width,
+                result.thumbnail_height,
+                session.thumbnail_jpeg_quality,
+                result.inferred_dpi,
                 result.pptx_to_pdf_timeout_s,
                 result.pdf_to_images_timeout_s,
                 result.pdf_to_images_page_timeout_s,
@@ -282,7 +312,7 @@ class ConversionServiceImpl(conversion_connect.ConversionService):
                 session,
                 phase=conversion_pb2.CONVERSION_PHASE_UPLOADING_RESULTS,
                 current_progress=0,
-                max_progress=len(result.slides),
+                max_progress=len(result.slides) * 2,
             )
             session.slide_deck = await asyncio.to_thread(
                 self._upload_and_build_slide_deck,
@@ -291,6 +321,8 @@ class ConversionServiceImpl(conversion_connect.ConversionService):
                 result.source_filename,
                 result.width,
                 result.height,
+                result.thumbnail_width,
+                result.thumbnail_height,
                 lambda current, max_value: self._set_session_progress(
                     session,
                     phase=conversion_pb2.CONVERSION_PHASE_UPLOADING_RESULTS,
@@ -358,12 +390,16 @@ class ConversionServiceImpl(conversion_connect.ConversionService):
         source_filename: str,
         width: int,
         height: int,
+        thumbnail_width: int,
+        thumbnail_height: int,
         progress_callback: Callable[[int, int], None] | None = None,
     ) -> conversion_pb2.SlideDeck:
         """Upload generated slide images and construct API response payload."""
         response_slides: list[conversion_pb2.Slide] = []
         slide_total = len(slides)
-        for slide_index, slide in enumerate(slides, start=1):
+        upload_total = slide_total * 2
+        upload_index = 0
+        for slide in slides:
             object_key = f"output/slide-{slide.index:04d}{slide.image_path.suffix}"
             self._store.fput_object(session.bucket_name, object_key, slide.image_path)
             image_url = self._store.presigned_get_url(
@@ -371,15 +407,33 @@ class ConversionServiceImpl(conversion_connect.ConversionService):
                 object_key,
                 ttl_seconds=self._config.s3_session_ttl_seconds,
             )
+            upload_index += 1
+            if progress_callback is not None:
+                progress_callback(upload_index, upload_total)
+            thumbnail_object_key = (
+                f"output/thumb/slide-{slide.index:04d}{slide.thumbnail_path.suffix}"
+            )
+            self._store.fput_object(
+                session.bucket_name,
+                thumbnail_object_key,
+                slide.thumbnail_path,
+            )
+            thumbnail_image_url = self._store.presigned_get_url(
+                session.bucket_name,
+                thumbnail_object_key,
+                ttl_seconds=self._config.s3_session_ttl_seconds,
+            )
+            upload_index += 1
             response_slides.append(
                 conversion_pb2.Slide(
                     index=slide.index,
                     notes_plain=slide.notes_plain,
                     image_url=image_url,
+                    thumbnail_image_url=thumbnail_image_url,
                 )
             )
             if progress_callback is not None:
-                progress_callback(slide_index, slide_total)
+                progress_callback(upload_index, upload_total)
 
         return conversion_pb2.SlideDeck(
             conversion_id=session.conversion_id,
@@ -388,8 +442,38 @@ class ConversionServiceImpl(conversion_connect.ConversionService):
             created_at=_to_timestamp(utc_now()),
             width=width,
             height=height,
+            thumbnail_width=thumbnail_width,
+            thumbnail_height=thumbnail_height,
         )
 
+    def _resolve_raster_options(
+        self,
+        options: conversion_pb2.SlideRasterOptions,
+        *,
+        default_resolution: conversion_pb2.ConversionResolution,
+        default_jpeg_quality: int,
+        field_name: str,
+    ) -> tuple[conversion_pb2.ConversionResolution, int]:
+        """Resolve per-tier raster options with defaults and validation."""
+        resolution = options.resolution
+        if resolution == conversion_pb2.CONVERSION_RESOLUTION_UNSPECIFIED:
+            resolution = default_resolution
+        if resolution not in _RESOLUTION_PRESET_BY_PROTO:
+            raise ConnectError(Code.INVALID_ARGUMENT, f"{field_name}.resolution is invalid")
+        jpeg_quality = default_jpeg_quality
+        if options.HasField("jpeg"):
+            quality = options.jpeg.quality
+            if quality == 0:
+                jpeg_quality = default_jpeg_quality
+            elif 1 <= quality <= 100:
+                jpeg_quality = quality
+            else:
+                raise ConnectError(
+                    Code.INVALID_ARGUMENT,
+                    f"{field_name}.jpeg.quality must be 0 or between 1 and 100",
+                )
+        return resolution, jpeg_quality
+
     async def _delayed_cleanup(self, session: ConversionSession) -> None:
         """Delete storage resources after the configured session retention period."""
         try: