diff --git a/pkg/conversions/strings.go b/pkg/conversions/strings.go
index 63cc68f2a7..a03b7d963b 100644
--- a/pkg/conversions/strings.go
+++ b/pkg/conversions/strings.go
@@ -1,6 +1,7 @@
 package conversions
 
 import (
+	"strconv"
 	"strings"
 )
 
@@ -14,3 +15,12 @@ func StringToSliceString(src string, sep string) []string {
 
 	return parts
 }
+
+// StringToInt32 parses s as a base-10 int32, returning fallback on any error.
+func StringToInt32(s string, fallback int32) int32 {
+	v, err := strconv.ParseInt(s, 10, 32)
+	if err != nil {
+		return fallback
+	}
+	return int32(v)
+}
diff --git a/protogen/gen/opencloud/messages/search/v0/search.pb.go b/protogen/gen/opencloud/messages/search/v0/search.pb.go
index 0a8bf9c1c2..88290ad957 100644
--- a/protogen/gen/opencloud/messages/search/v0/search.pb.go
+++ b/protogen/gen/opencloud/messages/search/v0/search.pb.go
@@ -361,6 +361,63 @@ func (x *Image) GetHeight() int32 {
 	return 0
 }
 
+// Preview carries the dimensions of an embedded preview (e.g. audio cover art).
+// Its presence signals that a preview is available for the resource.
+type Preview struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	Width  *int32 `protobuf:"varint,1,opt,name=width,proto3,oneof" json:"width,omitempty"`
+	Height *int32 `protobuf:"varint,2,opt,name=height,proto3,oneof" json:"height,omitempty"`
+}
+
+func (x *Preview) Reset() {
+	*x = Preview{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_opencloud_messages_search_v0_search_proto_msgTypes[4]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *Preview) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*Preview) ProtoMessage() {}
+
+func (x *Preview) ProtoReflect() protoreflect.Message {
+	mi := &file_opencloud_messages_search_v0_search_proto_msgTypes[4]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use Preview.ProtoReflect.Descriptor instead.
+func (*Preview) Descriptor() ([]byte, []int) {
+	return file_opencloud_messages_search_v0_search_proto_rawDescGZIP(), []int{4}
+}
+
+func (x *Preview) GetWidth() int32 {
+	if x != nil && x.Width != nil {
+		return *x.Width
+	}
+	return 0
+}
+
+func (x *Preview) GetHeight() int32 {
+	if x != nil && x.Height != nil {
+		return *x.Height
+	}
+	return 0
+}
+
 type GeoCoordinates struct {
 	state         protoimpl.MessageState
 	sizeCache     protoimpl.SizeCache
@@ -374,7 +431,7 @@ type GeoCoordinates struct {
 func (x *GeoCoordinates) Reset() {
 	*x = GeoCoordinates{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_opencloud_messages_search_v0_search_proto_msgTypes[4]
+		mi := &file_opencloud_messages_search_v0_search_proto_msgTypes[5]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -387,7 +444,7 @@ func (x *GeoCoordinates) String() string {
 func (*GeoCoordinates) ProtoMessage() {}
 
 func (x *GeoCoordinates) ProtoReflect() protoreflect.Message {
-	mi := &file_opencloud_messages_search_v0_search_proto_msgTypes[4]
+	mi := &file_opencloud_messages_search_v0_search_proto_msgTypes[5]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -400,7 +457,7 @@ func (x *GeoCoordinates) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use GeoCoordinates.ProtoReflect.Descriptor instead.
 func (*GeoCoordinates) Descriptor() ([]byte, []int) {
-	return file_opencloud_messages_search_v0_search_proto_rawDescGZIP(), []int{4}
+	return file_opencloud_messages_search_v0_search_proto_rawDescGZIP(), []int{5}
 }
 
 func (x *GeoCoordinates) GetAltitude() float64 {
@@ -443,7 +500,7 @@ type Photo struct {
 func (x *Photo) Reset() {
 	*x = Photo{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_opencloud_messages_search_v0_search_proto_msgTypes[5]
+		mi := &file_opencloud_messages_search_v0_search_proto_msgTypes[6]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -456,7 +513,7 @@ func (x *Photo) String() string {
 func (*Photo) ProtoMessage() {}
 
 func (x *Photo) ProtoReflect() protoreflect.Message {
-	mi := &file_opencloud_messages_search_v0_search_proto_msgTypes[5]
+	mi := &file_opencloud_messages_search_v0_search_proto_msgTypes[6]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -469,7 +526,7 @@ func (x *Photo) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use Photo.ProtoReflect.Descriptor instead.
 func (*Photo) Descriptor() ([]byte, []int) {
-	return file_opencloud_messages_search_v0_search_proto_rawDescGZIP(), []int{5}
+	return file_opencloud_messages_search_v0_search_proto_rawDescGZIP(), []int{6}
 }
 
 func (x *Photo) GetCameraMake() string {
@@ -555,7 +612,7 @@ type Video struct {
 func (x *Video) Reset() {
 	*x = Video{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_opencloud_messages_search_v0_search_proto_msgTypes[6]
+		mi := &file_opencloud_messages_search_v0_search_proto_msgTypes[7]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -568,7 +625,7 @@ func (x *Video) String() string {
 func (*Video) ProtoMessage() {}
 
 func (x *Video) ProtoReflect() protoreflect.Message {
-	mi := &file_opencloud_messages_search_v0_search_proto_msgTypes[6]
+	mi := &file_opencloud_messages_search_v0_search_proto_msgTypes[7]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -581,7 +638,7 @@ func (x *Video) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use Video.ProtoReflect.Descriptor instead.
 func (*Video) Descriptor() ([]byte, []int) {
-	return file_opencloud_messages_search_v0_search_proto_rawDescGZIP(), []int{6}
+	return file_opencloud_messages_search_v0_search_proto_rawDescGZIP(), []int{7}
 }
 
 func (x *Video) GetAudioBitsPerSample() int32 {
@@ -667,7 +724,7 @@ type MotionPhoto struct {
 func (x *MotionPhoto) Reset() {
 	*x = MotionPhoto{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_opencloud_messages_search_v0_search_proto_msgTypes[7]
+		mi := &file_opencloud_messages_search_v0_search_proto_msgTypes[8]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -680,7 +737,7 @@ func (x *MotionPhoto) String() string {
 func (*MotionPhoto) ProtoMessage() {}
 
 func (x *MotionPhoto) ProtoReflect() protoreflect.Message {
-	mi := &file_opencloud_messages_search_v0_search_proto_msgTypes[7]
+	mi := &file_opencloud_messages_search_v0_search_proto_msgTypes[8]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -693,7 +750,7 @@ func (x *MotionPhoto) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use MotionPhoto.ProtoReflect.Descriptor instead.
 func (*MotionPhoto) Descriptor() ([]byte, []int) {
-	return file_opencloud_messages_search_v0_search_proto_rawDescGZIP(), []int{7}
+	return file_opencloud_messages_search_v0_search_proto_rawDescGZIP(), []int{8}
 }
 
 func (x *MotionPhoto) GetVersion() int32 {
@@ -732,7 +789,7 @@ type LivePhoto struct {
 func (x *LivePhoto) Reset() {
 	*x = LivePhoto{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_opencloud_messages_search_v0_search_proto_msgTypes[8]
+		mi := &file_opencloud_messages_search_v0_search_proto_msgTypes[9]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -745,7 +802,7 @@ func (x *LivePhoto) String() string {
 func (*LivePhoto) ProtoMessage() {}
 
 func (x *LivePhoto) ProtoReflect() protoreflect.Message {
-	mi := &file_opencloud_messages_search_v0_search_proto_msgTypes[8]
+	mi := &file_opencloud_messages_search_v0_search_proto_msgTypes[9]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -758,7 +815,7 @@ func (x *LivePhoto) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use LivePhoto.ProtoReflect.Descriptor instead.
 func (*LivePhoto) Descriptor() ([]byte, []int) {
-	return file_opencloud_messages_search_v0_search_proto_rawDescGZIP(), []int{8}
+	return file_opencloud_messages_search_v0_search_proto_rawDescGZIP(), []int{9}
 }
 
 func (x *LivePhoto) GetContentId() string {
@@ -824,12 +881,13 @@ type Entity struct {
 	MotionPhoto      *MotionPhoto           `protobuf:"bytes,21,opt,name=motionPhoto,proto3" json:"motionPhoto,omitempty"`
 	Video            *Video                 `protobuf:"bytes,22,opt,name=video,proto3" json:"video,omitempty"`
 	LivePhoto        *LivePhoto             `protobuf:"bytes,23,opt,name=livePhoto,proto3" json:"livePhoto,omitempty"`
+	Preview          *Preview               `protobuf:"bytes,24,opt,name=preview,proto3" json:"preview,omitempty"`
 }
 
 func (x *Entity) Reset() {
 	*x = Entity{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_opencloud_messages_search_v0_search_proto_msgTypes[9]
+		mi := &file_opencloud_messages_search_v0_search_proto_msgTypes[10]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -842,7 +900,7 @@ func (x *Entity) String() string {
 func (*Entity) ProtoMessage() {}
 
 func (x *Entity) ProtoReflect() protoreflect.Message {
-	mi := &file_opencloud_messages_search_v0_search_proto_msgTypes[9]
+	mi := &file_opencloud_messages_search_v0_search_proto_msgTypes[10]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -855,7 +913,7 @@ func (x *Entity) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use Entity.ProtoReflect.Descriptor instead.
 func (*Entity) Descriptor() ([]byte, []int) {
-	return file_opencloud_messages_search_v0_search_proto_rawDescGZIP(), []int{9}
+	return file_opencloud_messages_search_v0_search_proto_rawDescGZIP(), []int{10}
 }
 
 func (x *Entity) GetRef() *Reference {
@@ -1019,6 +1077,13 @@ func (x *Entity) GetLivePhoto() *LivePhoto {
 	return nil
 }
 
+func (x *Entity) GetPreview() *Preview {
+	if x != nil {
+		return x.Preview
+	}
+	return nil
+}
+
 type Match struct {
 	state         protoimpl.MessageState
 	sizeCache     protoimpl.SizeCache
@@ -1033,7 +1098,7 @@ type Match struct {
 func (x *Match) Reset() {
 	*x = Match{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_opencloud_messages_search_v0_search_proto_msgTypes[10]
+		mi := &file_opencloud_messages_search_v0_search_proto_msgTypes[11]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -1046,7 +1111,7 @@ func (x *Match) String() string {
 func (*Match) ProtoMessage() {}
 
 func (x *Match) ProtoReflect() protoreflect.Message {
-	mi := &file_opencloud_messages_search_v0_search_proto_msgTypes[10]
+	mi := &file_opencloud_messages_search_v0_search_proto_msgTypes[11]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -1059,7 +1124,7 @@ func (x *Match) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use Match.ProtoReflect.Descriptor instead.
 func (*Match) Descriptor() ([]byte, []int) {
-	return file_opencloud_messages_search_v0_search_proto_rawDescGZIP(), []int{10}
+	return file_opencloud_messages_search_v0_search_proto_rawDescGZIP(), []int{11}
 }
 
 func (x *Match) GetEntity() *Entity {
@@ -1149,197 +1214,206 @@ var file_opencloud_messages_search_v0_search_proto_rawDesc = []byte{
 	0x01, 0x12, 0x1b, 0x0a, 0x06, 0x68, 0x65, 0x69, 0x67, 0x68, 0x74, 0x18, 0x02, 0x20, 0x01, 0x28,
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+	0x45, 0x6e, 0x74, 0x69, 0x74, 0x79, 0x52, 0x06, 0x65, 0x6e, 0x74, 0x69, 0x74, 0x79, 0x12, 0x14,
+	0x0a, 0x05, 0x73, 0x63, 0x6f, 0x72, 0x65, 0x18, 0x02, 0x20, 0x01, 0x28, 0x02, 0x52, 0x05, 0x73,
+	0x63, 0x6f, 0x72, 0x65, 0x42, 0x4d, 0x5a, 0x4b, 0x67, 0x69, 0x74, 0x68, 0x75, 0x62, 0x2e, 0x63,
+	0x6f, 0x6d, 0x2f, 0x6f, 0x70, 0x65, 0x6e, 0x63, 0x6c, 0x6f, 0x75, 0x64, 0x2d, 0x65, 0x75, 0x2f,
+	0x6f, 0x70, 0x65, 0x6e, 0x63, 0x6c, 0x6f, 0x75, 0x64, 0x2f, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x67,
+	0x65, 0x6e, 0x2f, 0x67, 0x65, 0x6e, 0x2f, 0x6f, 0x70, 0x65, 0x6e, 0x63, 0x6c, 0x6f, 0x75, 0x64,
+	0x2f, 0x6d, 0x65, 0x73, 0x73, 0x61, 0x67, 0x65, 0x73, 0x2f, 0x73, 0x65, 0x61, 0x72, 0x63, 0x68,
+	0x2f, 0x76, 0x30, 0x62, 0x06, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x33,
 }
 
 var (
@@ -1354,42 +1428,44 @@ func file_opencloud_messages_search_v0_search_proto_rawDescGZIP() []byte {
 	return file_opencloud_messages_search_v0_search_proto_rawDescData
 }
 
-var file_opencloud_messages_search_v0_search_proto_msgTypes = make([]protoimpl.MessageInfo, 11)
+var file_opencloud_messages_search_v0_search_proto_msgTypes = make([]protoimpl.MessageInfo, 12)
 var file_opencloud_messages_search_v0_search_proto_goTypes = []interface{}{
 	(*ResourceID)(nil),            // 0: opencloud.messages.search.v0.ResourceID
 	(*Reference)(nil),             // 1: opencloud.messages.search.v0.Reference
 	(*Audio)(nil),                 // 2: opencloud.messages.search.v0.Audio
 	(*Image)(nil),                 // 3: opencloud.messages.search.v0.Image
-	(*GeoCoordinates)(nil),        // 4: opencloud.messages.search.v0.GeoCoordinates
-	(*Photo)(nil),                 // 5: opencloud.messages.search.v0.Photo
-	(*Video)(nil),                 // 6: opencloud.messages.search.v0.Video
-	(*MotionPhoto)(nil),           // 7: opencloud.messages.search.v0.MotionPhoto
-	(*LivePhoto)(nil),             // 8: opencloud.messages.search.v0.LivePhoto
-	(*Entity)(nil),                // 9: opencloud.messages.search.v0.Entity
-	(*Match)(nil),                 // 10: opencloud.messages.search.v0.Match
-	(*timestamppb.Timestamp)(nil), // 11: google.protobuf.Timestamp
+	(*Preview)(nil),               // 4: opencloud.messages.search.v0.Preview
+	(*GeoCoordinates)(nil),        // 5: opencloud.messages.search.v0.GeoCoordinates
+	(*Photo)(nil),                 // 6: opencloud.messages.search.v0.Photo
+	(*Video)(nil),                 // 7: opencloud.messages.search.v0.Video
+	(*MotionPhoto)(nil),           // 8: opencloud.messages.search.v0.MotionPhoto
+	(*LivePhoto)(nil),             // 9: opencloud.messages.search.v0.LivePhoto
+	(*Entity)(nil),                // 10: opencloud.messages.search.v0.Entity
+	(*Match)(nil),                 // 11: opencloud.messages.search.v0.Match
+	(*timestamppb.Timestamp)(nil), // 12: google.protobuf.Timestamp
 }
 var file_opencloud_messages_search_v0_search_proto_depIdxs = []int32{
 	0,  // 0: opencloud.messages.search.v0.Reference.resource_id:type_name -> opencloud.messages.search.v0.ResourceID
-	11, // 1: opencloud.messages.search.v0.Photo.takenDateTime:type_name -> google.protobuf.Timestamp
+	12, // 1: opencloud.messages.search.v0.Photo.takenDateTime:type_name -> google.protobuf.Timestamp
 	1,  // 2: opencloud.messages.search.v0.Entity.ref:type_name -> opencloud.messages.search.v0.Reference
 	0,  // 3: opencloud.messages.search.v0.Entity.id:type_name -> opencloud.messages.search.v0.ResourceID
-	11, // 4: opencloud.messages.search.v0.Entity.last_modified_time:type_name -> google.protobuf.Timestamp
+	12, // 4: opencloud.messages.search.v0.Entity.last_modified_time:type_name -> google.protobuf.Timestamp
 	0,  // 5: opencloud.messages.search.v0.Entity.parent_id:type_name -> opencloud.messages.search.v0.ResourceID
 	2,  // 6: opencloud.messages.search.v0.Entity.audio:type_name -> opencloud.messages.search.v0.Audio
-	4,  // 7: opencloud.messages.search.v0.Entity.location:type_name -> opencloud.messages.search.v0.GeoCoordinates
+	5,  // 7: opencloud.messages.search.v0.Entity.location:type_name -> opencloud.messages.search.v0.GeoCoordinates
 	0,  // 8: opencloud.messages.search.v0.Entity.remote_item_id:type_name -> opencloud.messages.search.v0.ResourceID
 	3,  // 9: opencloud.messages.search.v0.Entity.image:type_name -> opencloud.messages.search.v0.Image
-	5,  // 10: opencloud.messages.search.v0.Entity.photo:type_name -> opencloud.messages.search.v0.Photo
-	7,  // 11: opencloud.messages.search.v0.Entity.motionPhoto:type_name -> opencloud.messages.search.v0.MotionPhoto
-	6,  // 12: opencloud.messages.search.v0.Entity.video:type_name -> opencloud.messages.search.v0.Video
-	8,  // 13: opencloud.messages.search.v0.Entity.livePhoto:type_name -> opencloud.messages.search.v0.LivePhoto
-	9,  // 14: opencloud.messages.search.v0.Match.entity:type_name -> opencloud.messages.search.v0.Entity
-	15, // [15:15] is the sub-list for method output_type
-	15, // [15:15] is the sub-list for method input_type
-	15, // [15:15] is the sub-list for extension type_name
-	15, // [15:15] is the sub-list for extension extendee
-	0,  // [0:15] is the sub-list for field type_name
+	6,  // 10: opencloud.messages.search.v0.Entity.photo:type_name -> opencloud.messages.search.v0.Photo
+	8,  // 11: opencloud.messages.search.v0.Entity.motionPhoto:type_name -> opencloud.messages.search.v0.MotionPhoto
+	7,  // 12: opencloud.messages.search.v0.Entity.video:type_name -> opencloud.messages.search.v0.Video
+	9,  // 13: opencloud.messages.search.v0.Entity.livePhoto:type_name -> opencloud.messages.search.v0.LivePhoto
+	4,  // 14: opencloud.messages.search.v0.Entity.preview:type_name -> opencloud.messages.search.v0.Preview
+	10, // 15: opencloud.messages.search.v0.Match.entity:type_name -> opencloud.messages.search.v0.Entity
+	16, // [16:16] is the sub-list for method output_type
+	16, // [16:16] is the sub-list for method input_type
+	16, // [16:16] is the sub-list for extension type_name
+	16, // [16:16] is the sub-list for extension extendee
+	0,  // [0:16] is the sub-list for field type_name
 }
 
 func init() { file_opencloud_messages_search_v0_search_proto_init() }
@@ -1447,7 +1523,7 @@ func file_opencloud_messages_search_v0_search_proto_init() {
 			}
 		}
 		file_opencloud_messages_search_v0_search_proto_msgTypes[4].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*GeoCoordinates); i {
+			switch v := v.(*Preview); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -1459,7 +1535,7 @@ func file_opencloud_messages_search_v0_search_proto_init() {
 			}
 		}
 		file_opencloud_messages_search_v0_search_proto_msgTypes[5].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*Photo); i {
+			switch v := v.(*GeoCoordinates); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -1471,7 +1547,7 @@ func file_opencloud_messages_search_v0_search_proto_init() {
 			}
 		}
 		file_opencloud_messages_search_v0_search_proto_msgTypes[6].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*Video); i {
+			switch v := v.(*Photo); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -1483,7 +1559,7 @@ func file_opencloud_messages_search_v0_search_proto_init() {
 			}
 		}
 		file_opencloud_messages_search_v0_search_proto_msgTypes[7].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*MotionPhoto); i {
+			switch v := v.(*Video); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -1495,7 +1571,7 @@ func file_opencloud_messages_search_v0_search_proto_init() {
 			}
 		}
 		file_opencloud_messages_search_v0_search_proto_msgTypes[8].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*LivePhoto); i {
+			switch v := v.(*MotionPhoto); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -1507,7 +1583,7 @@ func file_opencloud_messages_search_v0_search_proto_init() {
 			}
 		}
 		file_opencloud_messages_search_v0_search_proto_msgTypes[9].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*Entity); i {
+			switch v := v.(*LivePhoto); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -1519,6 +1595,18 @@ func file_opencloud_messages_search_v0_search_proto_init() {
 			}
 		}
 		file_opencloud_messages_search_v0_search_proto_msgTypes[10].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*Entity); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_opencloud_messages_search_v0_search_proto_msgTypes[11].Exporter = func(v interface{}, i int) interface{} {
 			switch v := v.(*Match); i {
 			case 0:
 				return &v.state
@@ -1538,13 +1626,14 @@ func file_opencloud_messages_search_v0_search_proto_init() {
 	file_opencloud_messages_search_v0_search_proto_msgTypes[6].OneofWrappers = []interface{}{}
 	file_opencloud_messages_search_v0_search_proto_msgTypes[7].OneofWrappers = []interface{}{}
 	file_opencloud_messages_search_v0_search_proto_msgTypes[8].OneofWrappers = []interface{}{}
+	file_opencloud_messages_search_v0_search_proto_msgTypes[9].OneofWrappers = []interface{}{}
 	type x struct{}
 	out := protoimpl.TypeBuilder{
 		File: protoimpl.DescBuilder{
 			GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
 			RawDescriptor: file_opencloud_messages_search_v0_search_proto_rawDesc,
 			NumEnums:      0,
-			NumMessages:   11,
+			NumMessages:   12,
 			NumExtensions: 0,
 			NumServices:   0,
 		},
diff --git a/protogen/gen/opencloud/services/search/v0/search.swagger.json b/protogen/gen/opencloud/services/search/v0/search.swagger.json
index 43ff1e2c79..86d46d57d1 100644
--- a/protogen/gen/opencloud/services/search/v0/search.swagger.json
+++ b/protogen/gen/opencloud/services/search/v0/search.swagger.json
@@ -307,6 +307,9 @@
         },
         "livePhoto": {
           "$ref": "#/definitions/v0LivePhoto"
+        },
+        "preview": {
+          "$ref": "#/definitions/v0Preview"
         }
       }
     },
@@ -478,6 +481,20 @@
         }
       }
     },
+    "v0Preview": {
+      "type": "object",
+      "properties": {
+        "width": {
+          "type": "integer",
+          "format": "int32"
+        },
+        "height": {
+          "type": "integer",
+          "format": "int32"
+        }
+      },
+      "description": "Preview carries the dimensions of an embedded preview (e.g. audio cover art).\nIts presence signals that a preview is available for the resource."
+    },
     "v0Reference": {
       "type": "object",
       "properties": {
diff --git a/protogen/proto/opencloud/messages/search/v0/search.proto b/protogen/proto/opencloud/messages/search/v0/search.proto
index a2a25a8d5e..41bcb5136b 100644
--- a/protogen/proto/opencloud/messages/search/v0/search.proto
+++ b/protogen/proto/opencloud/messages/search/v0/search.proto
@@ -41,6 +41,13 @@ message Image {
 	optional int32 height = 2;
 }
 
+// Preview carries the dimensions of an embedded preview (e.g. audio cover art).
+// Its presence signals that a preview is available for the resource.
+message Preview {
+	optional int32 width = 1;
+	optional int32 height = 2;
+}
+
 message GeoCoordinates {
   optional double altitude  = 1;
   optional double latitude = 2;
@@ -110,6 +117,7 @@ message Entity {
 	MotionPhoto motionPhoto = 21;
 	Video video = 22;
 	LivePhoto livePhoto = 23;
+	Preview preview = 24;
 }
 
 message Match {
diff --git a/services/graph/pkg/service/v0/thumbnails.go b/services/graph/pkg/service/v0/thumbnails.go
index 75d28bd3a7..357647fcf1 100644
--- a/services/graph/pkg/service/v0/thumbnails.go
+++ b/services/graph/pkg/service/v0/thumbnails.go
@@ -8,6 +8,7 @@ import (
 	libregraph "github.com/opencloud-eu/libre-graph-api-go"
 	"github.com/opencloud-eu/reva/v2/pkg/storagespace"
 
+	"github.com/opencloud-eu/opencloud/pkg/conversions"
 	"github.com/opencloud-eu/opencloud/services/thumbnails/pkg/thumbnail"
 )
 
@@ -34,17 +35,36 @@ func setDriveItemThumbnails(item *libregraph.DriveItem, res *provider.ResourceIn
 	}
 }
 
-// previewThumbnailSet returns nil when the thumbnailer cannot render the resource.
+// previewThumbnailSet returns nil when no preview can be produced for the resource.
 func previewThumbnailSet(res *provider.ResourceInfo, baseURL string) *libregraph.ThumbnailSet {
-	if !thumbnail.IsMimeTypeSupported(res.GetMimeType()) {
+	if !thumbnail.HasPreview(res) {
 		return nil
 	}
-	return thumbnailSetFor(baseURL, storagespace.FormatResourceID(res.GetId()))
+
+	itemID := storagespace.FormatResourceID(res.GetId())
+	set := thumbnailSetFor(baseURL, itemID)
+	// only the source carries exact dimensions, the boxes above are requests
+	if w, h := previewSourceDimensions(res); w > 0 && h > 0 {
+		url := fmt.Sprintf("%s&x=%d&y=%d", previewBaseURL(baseURL, itemID), w, h)
+		set.Source = &libregraph.Thumbnail{Url: &url, Width: &w, Height: &h}
+	}
+	return set
+}
+
+// previewSourceDimensions: audio cover from oc.preview, images from the image facet.
+func previewSourceDimensions(res *provider.ResourceInfo) (int32, int32) {
+	if w, h := thumbnail.PreviewDimensions(res); w > 0 && h > 0 {
+		return w, h
+	}
+	meta := res.GetArbitraryMetadata().GetMetadata()
+	w := conversions.StringToInt32(meta["libre.graph.image.width"], 0)
+	h := conversions.StringToInt32(meta["libre.graph.image.height"], 0)
+	return w, h
 }
 
 // thumbnailSetFor builds the urls of the WebDAV preview endpoint.
 func thumbnailSetFor(baseURL, itemID string) *libregraph.ThumbnailSet {
-	base := fmt.Sprintf("%s/dav/spaces/%s?scalingup=0&preview=1&processor=thumbnail", baseURL, itemID)
+	base := previewBaseURL(baseURL, itemID)
 	return &libregraph.ThumbnailSet{
 		Small:  previewThumbnail(base, thumbnailBoxSmall),
 		Medium: previewThumbnail(base, thumbnailBoxMedium),
@@ -52,6 +72,10 @@ func thumbnailSetFor(baseURL, itemID string) *libregraph.ThumbnailSet {
 	}
 }
 
+func previewBaseURL(baseURL, itemID string) string {
+	return fmt.Sprintf("%s/dav/spaces/%s?scalingup=0&preview=1&processor=thumbnail", baseURL, itemID)
+}
+
 func previewThumbnail(base string, box int32) *libregraph.Thumbnail {
 	url := fmt.Sprintf("%s&x=%d&y=%d", base, box, box)
 	return &libregraph.Thumbnail{Url: &url}
diff --git a/services/search/pkg/bleve/backend.go b/services/search/pkg/bleve/backend.go
index 7fc6fe5bfa..6da56dd018 100644
--- a/services/search/pkg/bleve/backend.go
+++ b/services/search/pkg/bleve/backend.go
@@ -125,16 +125,18 @@ func (b *Backend) Search(_ context.Context, sir *searchService.SearchIndexReques
 					ResourceId: resourceIDtoSearchID(rootID),
 					Path:       getFieldValue[string](hit.Fields, "Path"),
 				},
-				Id:          resourceIDtoSearchID(rID),
-				Name:        getFieldValue[string](hit.Fields, "Name"),
-				ParentId:    resourceIDtoSearchID(pID),
-				Size:        uint64(getFieldValue[float64](hit.Fields, "Size")),
-				Type:        uint64(getFieldValue[float64](hit.Fields, "Type")),
-				MimeType:    getFieldValue[string](hit.Fields, "MimeType"),
-				Deleted:     getFieldValue[bool](hit.Fields, "Deleted"),
-				Tags:        getFieldSliceValue[string](hit.Fields, "Tags"),
-				Favorites:   getFieldSliceValue[string](hit.Fields, "Favorites"),
-				Highlights:  getFragmentValue(hit.Fragments, "Content", 0),
+				Id:         resourceIDtoSearchID(rID),
+				Name:       getFieldValue[string](hit.Fields, "Name"),
+				ParentId:   resourceIDtoSearchID(pID),
+				Size:       uint64(getFieldValue[float64](hit.Fields, "Size")),
+				Type:       uint64(getFieldValue[float64](hit.Fields, "Type")),
+				MimeType:   getFieldValue[string](hit.Fields, "MimeType"),
+				Deleted:    getFieldValue[bool](hit.Fields, "Deleted"),
+				Tags:       getFieldSliceValue[string](hit.Fields, "Tags"),
+				Favorites:  getFieldSliceValue[string](hit.Fields, "Favorites"),
+				Highlights: getFragmentValue(hit.Fragments, "Content", 0),
+				Preview:    hitToFacet[searchMessage.Preview](hit.Fields, "preview"),
+
 				Audio:       hitToFacet[searchMessage.Audio](hit.Fields, "audio"),
 				Image:       hitToFacet[searchMessage.Image](hit.Fields, "image"),
 				Location:    hitToFacet[searchMessage.GeoCoordinates](hit.Fields, "location"),
diff --git a/services/search/pkg/bleve/testdata/mapping.golden.json b/services/search/pkg/bleve/testdata/mapping.golden.json
index 61ea6474f1..5f12e2b398 100644
--- a/services/search/pkg/bleve/testdata/mapping.golden.json
+++ b/services/search/pkg/bleve/testdata/mapping.golden.json
@@ -1053,6 +1053,38 @@
           }
         }
       },
+      "preview": {
+        "enabled": true,
+        "dynamic": true,
+        "properties": {
+          "height": {
+            "enabled": true,
+            "dynamic": true,
+            "fields": [
+              {
+                "type": "number",
+                "store": true,
+                "index": true,
+                "include_in_all": true,
+                "docvalues": true
+              }
+            ]
+          },
+          "width": {
+            "enabled": true,
+            "dynamic": true,
+            "fields": [
+              {
+                "type": "number",
+                "store": true,
+                "index": true,
+                "include_in_all": true,
+                "docvalues": true
+              }
+            ]
+          }
+        }
+      },
       "video": {
         "enabled": true,
         "dynamic": true,
diff --git a/services/search/pkg/content/content.go b/services/search/pkg/content/content.go
index 6a945b0fd3..d645a90bb2 100644
--- a/services/search/pkg/content/content.go
+++ b/services/search/pkg/content/content.go
@@ -15,14 +15,16 @@ func init() {
 // Document wraps all resource meta fields,
 // it is used as a content extraction result.
 type Document struct {
-	Title       string                     `json:"Title"`
-	Name        string                     `json:"Name"`
-	Content     string                     `json:"Content"`
-	Size        uint64                     `json:"Size"`
-	Mtime       *time.Time                 `json:"Mtime,omitempty"`
-	MimeType    string                     `json:"MimeType"`
-	Tags        []string                   `json:"Tags"`
-	Favorites   []string                   `json:"Favorites"`
+	Title     string     `json:"Title"`
+	Name      string     `json:"Name"`
+	Content   string     `json:"Content"`
+	Size      uint64     `json:"Size"`
+	Mtime     *time.Time `json:"Mtime,omitempty"`
+	MimeType  string     `json:"MimeType"`
+	Tags      []string   `json:"Tags"`
+	Favorites []string   `json:"Favorites"`
+	Preview   *Preview   `json:"preview,omitempty"`
+
 	Audio       *libregraph.Audio          `json:"audio,omitempty"`
 	Image       *libregraph.Image          `json:"image,omitempty"`
 	Location    *libregraph.GeoCoordinates `json:"location,omitempty"`
@@ -32,6 +34,21 @@ type Document struct {
 	LivePhoto   *libregraph.LivePhoto      `json:"livePhoto,omitempty"`
 }
 
+// Preview holds the dimensions of an embedded preview (e.g. audio cover art).
+// Internal signal, not a Graph facet; its presence marks that a preview exists.
+type Preview struct {
+	Width  int32 `json:"width"`
+	Height int32 `json:"height"`
+}
+
+// ToMap flows Preview through the shared facet flattening, under oc.preview.
+func (p Preview) ToMap() (map[string]interface{}, error) {
+	return map[string]interface{}{
+		"width":  p.Width,
+		"height": p.Height,
+	}, nil
+}
+
 func CleanString(content, langCode string) string {
 	return strings.TrimSpace(stopwords.CleanString(content, langCode, true))
 }
diff --git a/services/search/pkg/content/tika.go b/services/search/pkg/content/tika.go
index 7b918e9ab9..34e68a6a47 100644
--- a/services/search/pkg/content/tika.go
+++ b/services/search/pkg/content/tika.go
@@ -82,7 +82,11 @@ func (t Tika) Extract(ctx context.Context, ri *provider.ResourceInfo) (Document,
 	if err != nil {
 		return doc, err
 	}
+	if len(metas) == 0 {
+		return doc, nil
+	}
 
+	// Title and content aggregate across the container and embedded resources.
 	for _, meta := range metas {
 		title, err := getFirstValue(meta, "dc:title")
 		if err != nil {
@@ -98,42 +102,27 @@ func (t Tika) Extract(ctx context.Context, ri *provider.ResourceInfo) (Document,
 		} else if content, err := getFirstValue(meta, "X-TIKA:content"); err == nil {
 			doc.Content = strings.TrimSpace(fmt.Sprintf("%s %s", doc.Content, content))
 		}
-
-		// keep facets from earlier entries, an embedded resource's meta
-		// (e.g. cover art) must not reset them
-		if v := t.getLocation(meta); v != nil {
-			doc.Location = v
-		}
-		if v := t.getImage(meta); v != nil {
-			doc.Image = v
-		}
-		if v := t.getPhoto(meta); v != nil {
-			doc.Photo = v
-		}
-		if v := t.getAudio(meta); v != nil {
-			doc.Audio = v
-		}
-		if v := t.getLivePhoto(meta); v != nil {
-			doc.LivePhoto = v
-		}
-	}
-
-	if len(metas) > 0 {
-		// the video facet says the file is a video, so it comes from the file
-		// itself: the clip tika extracts from a motion photo must not make its
-		// image look like one
-		doc.Video = t.getVideo(metas[0])
 	}
 
 	// a motion photo is the xmp on the file itself plus the video tika extracted
 	// from it. The xmp alone proves nothing: a share can keep it and strip the
 	// appended video.
-	if len(metas) > 0 {
-		if i := slices.IndexFunc(metas[1:], isVideo); i >= 0 {
-			doc.MotionPhoto = t.getMotionPhoto(metas[0], metas[i+1])
-		}
+	if i := slices.IndexFunc(metas[1:], isVideo); i >= 0 {
+		doc.MotionPhoto = t.getMotionPhoto(metas[0], metas[i+1])
 	}
 
+	doc.Preview = getPreview(ri.GetMimeType(), metas)
+
+	// Facets come from the container (first entry) only; embedded resources like
+	// audio cover art must not leak in (the cover becomes the preview instead).
+	container := metas[0]
+	doc.Location = t.getLocation(container)
+	doc.Image = t.getImage(container)
+	doc.Photo = t.getPhoto(container)
+	doc.Audio = t.getAudio(container)
+	doc.Video = t.getVideo(container)
+	doc.LivePhoto = t.getLivePhoto(container)
+
 	if langCode := t.detectLanguage(ctx, doc.Content); langCode != "" && t.CleanStopWords {
 		doc.Content = CleanString(doc.Content, langCode)
 	}
diff --git a/services/search/pkg/content/tika_preview.go b/services/search/pkg/content/tika_preview.go
new file mode 100644
index 0000000000..76a238e562
--- /dev/null
+++ b/services/search/pkg/content/tika_preview.go
@@ -0,0 +1,47 @@
+package content
+
+import (
+	"strconv"
+	"strings"
+
+	"github.com/opencloud-eu/opencloud/services/thumbnails/pkg/thumbnail"
+)
+
+// frontCoverDescription is the picture type Tika reports (as dc:description) for
+// the front cover, matching the thumbnailer's cover selection.
+const frontCoverDescription = "Cover (front)"
+
+// getPreview returns the dimensions of an audio file's embedded cover art from
+// Tika's recursive metadata, preferring the front cover (dc:description) and
+// falling back to the first image, matching the thumbnailer's selection. It only
+// runs for EmbeddedPreviewMimeTypes.
+func getPreview(mimeType string, metas []map[string][]string) *Preview {
+	if _, ok := thumbnail.EmbeddedPreviewMimeTypes[mimeType]; !ok {
+		return nil
+	}
+	var first *Preview
+	for _, meta := range metas {
+		ct, err := getFirstValue(meta, "Content-Type")
+		if err != nil || !strings.HasPrefix(ct, "image/") {
+			continue
+		}
+		w, wErr := getFirstValue(meta, "tiff:ImageWidth")
+		h, hErr := getFirstValue(meta, "tiff:ImageLength")
+		if wErr != nil || hErr != nil {
+			continue
+		}
+		width, wErr := strconv.ParseInt(w, 10, 32)
+		height, hErr := strconv.ParseInt(h, 10, 32)
+		if wErr != nil || hErr != nil || width <= 0 || height <= 0 {
+			continue
+		}
+		preview := &Preview{Width: int32(width), Height: int32(height)}
+		if desc, _ := getFirstValue(meta, "dc:description"); desc == frontCoverDescription {
+			return preview
+		}
+		if first == nil {
+			first = preview
+		}
+	}
+	return first
+}
diff --git a/services/search/pkg/content/tika_preview_test.go b/services/search/pkg/content/tika_preview_test.go
new file mode 100644
index 0000000000..f57055d768
--- /dev/null
+++ b/services/search/pkg/content/tika_preview_test.go
@@ -0,0 +1,49 @@
+package content
+
+import (
+	. "github.com/onsi/ginkgo/v2"
+	. "github.com/onsi/gomega"
+)
+
+var _ = Describe("getPreview", func() {
+	audio := map[string][]string{"Content-Type": {"audio/mpeg"}}
+	cover := map[string][]string{
+		"Content-Type":     {"image/jpeg"},
+		"tiff:ImageWidth":  {"500"},
+		"tiff:ImageLength": {"400"},
+	}
+	coverNoDims := map[string][]string{"Content-Type": {"image/jpeg"}}
+
+	It("returns the embedded cover dimensions for audio", func() {
+		p := getPreview("audio/mpeg", []map[string][]string{audio, cover})
+		Expect(p).ToNot(BeNil())
+		Expect(*p).To(Equal(Preview{Width: 500, Height: 400}))
+	})
+
+	It("returns nil when the audio has no cover", func() {
+		Expect(getPreview("audio/mpeg", []map[string][]string{audio})).To(BeNil())
+	})
+
+	It("returns nil when the cover lacks dimensions", func() {
+		Expect(getPreview("audio/mpeg", []map[string][]string{audio, coverNoDims})).To(BeNil())
+	})
+
+	It("prefers the front cover over an earlier back cover", func() {
+		back := map[string][]string{
+			"Content-Type": {"image/jpeg"}, "dc:description": {"Cover (back)"},
+			"tiff:ImageWidth": {"30"}, "tiff:ImageLength": {"30"},
+		}
+		front := map[string][]string{
+			"Content-Type": {"image/jpeg"}, "dc:description": {"Cover (front)"},
+			"tiff:ImageWidth": {"64"}, "tiff:ImageLength": {"40"},
+		}
+		p := getPreview("audio/mpeg", []map[string][]string{audio, back, front})
+		Expect(p).ToNot(BeNil())
+		Expect(*p).To(Equal(Preview{Width: 64, Height: 40}))
+	})
+
+	It("is gated to embedded-preview types", func() {
+		// an image is unconditional; its preview is not driven by oc.preview.
+		Expect(getPreview("image/png", []map[string][]string{cover})).To(BeNil())
+	})
+})
diff --git a/services/search/pkg/content/tika_test.go b/services/search/pkg/content/tika_test.go
index 5a224a9e33..fc0c3e41ec 100644
--- a/services/search/pkg/content/tika_test.go
+++ b/services/search/pkg/content/tika_test.go
@@ -170,17 +170,22 @@ var _ = Describe("Tika", func() {
 			Expect(doc.Content).To(Equal("body test stop words!!!"))
 		})
 
-		It("keeps the audio facet when an embedded resource follows", func() {
-			fullResponse = `[{"Content-Type": "audio/mpeg", "dc:title": "Sucker", "tk:content": "lyrics"}, {"Content-Type": "image/jpeg", "tiff:ImageWidth": "500"}]`
+		It("keeps the audio facet and captures the cover as preview", func() {
+			fullResponse = `[{"Content-Type": "audio/mpeg", "dc:title": "Sucker", "tk:content": "lyrics"}, {"Content-Type": "image/jpeg", "tiff:ImageWidth": "500", "tiff:ImageLength": "400"}]`
 
 			doc, err := tika.Extract(context.TODO(), &provider.ResourceInfo{
-				Type: provider.ResourceType_RESOURCE_TYPE_FILE,
-				Size: 1,
+				Type:     provider.ResourceType_RESOURCE_TYPE_FILE,
+				Size:     1,
+				MimeType: "audio/mpeg",
 			})
 			Expect(err).ToNot(HaveOccurred())
 			Expect(doc.Audio).ToNot(BeNil())
 			Expect(doc.Audio.Title).To(Equal(libregraph.PtrString("Sucker")))
-			Expect(doc.Image).ToNot(BeNil())
+			// facets describe the container only, the cover surfaces as preview
+			Expect(doc.Image).To(BeNil())
+			Expect(doc.Preview).ToNot(BeNil())
+			Expect(doc.Preview.Width).To(Equal(int32(500)))
+			Expect(doc.Preview.Height).To(Equal(int32(400)))
 		})
 
 		It("adds no audio facet to non-audio documents", func() {
diff --git a/services/search/pkg/opensearch/internal/convert/opensearch.go b/services/search/pkg/opensearch/internal/convert/opensearch.go
index 81d1b347e2..747f1dd856 100644
--- a/services/search/pkg/opensearch/internal/convert/opensearch.go
+++ b/services/search/pkg/opensearch/internal/convert/opensearch.go
@@ -79,6 +79,9 @@ func OpenSearchHitToMatch(hit opensearchgoAPI.SearchHit) (*searchMessage.Match,
 
 				return strings.Join(contentHighlights[:], "; ")
 			}(),
+
+			Preview: copyFacet[searchMessage.Preview](resource.Preview),
+
 			Audio:       copyFacet[searchMessage.Audio](resource.Audio),
 			Image:       copyFacet[searchMessage.Image](resource.Image),
 			Location:    copyFacet[searchMessage.GeoCoordinates](resource.Location),
diff --git a/services/search/pkg/opensearch/testdata/resource.golden.json b/services/search/pkg/opensearch/testdata/resource.golden.json
index ab343eef11..584ca6ea6d 100644
--- a/services/search/pkg/opensearch/testdata/resource.golden.json
+++ b/services/search/pkg/opensearch/testdata/resource.golden.json
@@ -283,6 +283,16 @@
           }
         }
       },
+      "preview": {
+        "properties": {
+          "height": {
+            "type": "integer"
+          },
+          "width": {
+            "type": "integer"
+          }
+        }
+      },
       "video": {
         "properties": {
           "audioBitsPerSample": {
diff --git a/services/search/pkg/search/service.go b/services/search/pkg/search/service.go
index 47caee4070..b39d64ce52 100644
--- a/services/search/pkg/search/service.go
+++ b/services/search/pkg/search/service.go
@@ -688,6 +688,7 @@ func (s *Service) doUpsertItem(ref *provider.Reference, batch BatchOperator) {
 	facetToMetadata(metadata, doc.Video, "libre.graph.video.")
 	facetToMetadata(metadata, doc.MotionPhoto, "libre.graph.motionPhoto.")
 	facetToMetadata(metadata, doc.LivePhoto, "libre.graph.livePhoto.")
+	facetToMetadata(metadata, doc.Preview, "oc.preview.")
 	if len(metadata) == 0 {
 		return
 	}
diff --git a/services/thumbnails/pkg/thumbnail/has_preview.go b/services/thumbnails/pkg/thumbnail/has_preview.go
new file mode 100644
index 0000000000..063f53e2bc
--- /dev/null
+++ b/services/thumbnails/pkg/thumbnail/has_preview.go
@@ -0,0 +1,45 @@
+package thumbnail
+
+import (
+	provider "github.com/cs3org/go-cs3apis/cs3/storage/provider/v1beta1"
+
+	"github.com/opencloud-eu/opencloud/pkg/conversions"
+)
+
+// Arbitrary-metadata keys holding an embedded preview's dimensions (e.g. audio
+// cover art), written at index time. Their presence signals a preview exists.
+const (
+	PreviewWidthKey  = "oc.preview.width"
+	PreviewHeightKey = "oc.preview.height"
+)
+
+// HasPreview reports whether a preview can be produced for the resource:
+// unconditional types by mimetype, embedded-preview types by stored dimensions.
+func HasPreview(md *provider.ResourceInfo) bool {
+	if md == nil {
+		return false
+	}
+	w, h := PreviewDimensions(md)
+	return HasPreviewForMimeType(md.GetMimeType(), w > 0 && h > 0)
+}
+
+// HasPreviewForMimeType is HasPreview for callers that only have the mimetype
+// and a presence signal (e.g. search results) rather than a full ResourceInfo.
+func HasPreviewForMimeType(mimeType string, hasEmbeddedPreview bool) bool {
+	if _, ok := UnconditionalPreviewMimeTypes[mimeType]; ok {
+		return true
+	}
+	if _, ok := EmbeddedPreviewMimeTypes[mimeType]; ok {
+		return hasEmbeddedPreview
+	}
+	return false
+}
+
+// PreviewDimensions returns the stored embedded-preview dimensions, or (0, 0).
+// Only meaningful for EmbeddedPreviewMimeTypes.
+func PreviewDimensions(md *provider.ResourceInfo) (int32, int32) {
+	meta := md.GetArbitraryMetadata().GetMetadata()
+	w := conversions.StringToInt32(meta[PreviewWidthKey], 0)
+	h := conversions.StringToInt32(meta[PreviewHeightKey], 0)
+	return w, h
+}
diff --git a/services/thumbnails/pkg/thumbnail/has_preview_test.go b/services/thumbnails/pkg/thumbnail/has_preview_test.go
new file mode 100644
index 0000000000..271e091cca
--- /dev/null
+++ b/services/thumbnails/pkg/thumbnail/has_preview_test.go
@@ -0,0 +1,45 @@
+package thumbnail_test
+
+import (
+	provider "github.com/cs3org/go-cs3apis/cs3/storage/provider/v1beta1"
+	. "github.com/onsi/ginkgo/v2"
+	. "github.com/onsi/gomega"
+
+	"github.com/opencloud-eu/opencloud/services/thumbnails/pkg/thumbnail"
+)
+
+func resourceInfo(mime string, meta map[string]string) *provider.ResourceInfo {
+	ri := &provider.ResourceInfo{MimeType: mime}
+	if meta != nil {
+		ri.ArbitraryMetadata = &provider.ArbitraryMetadata{Metadata: meta}
+	}
+	return ri
+}
+
+var _ = Describe("HasPreview", func() {
+	DescribeTable("preview availability",
+		func(md *provider.ResourceInfo, want bool) {
+			Expect(thumbnail.HasPreview(md)).To(Equal(want))
+		},
+		Entry("nil", nil, false),
+		Entry("unconditional image", resourceInfo("image/png", nil), true),
+		Entry("unconditional text", resourceInfo("text/plain", nil), true),
+		Entry("unsupported type", resourceInfo("application/pdf", nil), false),
+		Entry("audio without preview dims", resourceInfo("audio/mpeg", nil), false),
+		Entry("audio with zero dims", resourceInfo("audio/mpeg", map[string]string{
+			thumbnail.PreviewWidthKey: "0", thumbnail.PreviewHeightKey: "0",
+		}), false),
+		Entry("audio with preview dims", resourceInfo("audio/mpeg", map[string]string{
+			thumbnail.PreviewWidthKey: "500", thumbnail.PreviewHeightKey: "500",
+		}), true),
+	)
+
+	It("SupportedMimeTypes is the union of both preview sets", func() {
+		for k := range thumbnail.UnconditionalPreviewMimeTypes {
+			Expect(thumbnail.SupportedMimeTypes).To(HaveKey(k))
+		}
+		for k := range thumbnail.EmbeddedPreviewMimeTypes {
+			Expect(thumbnail.SupportedMimeTypes).To(HaveKey(k))
+		}
+	})
+})
diff --git a/services/thumbnails/pkg/thumbnail/mimetypes.go b/services/thumbnails/pkg/thumbnail/mimetypes.go
index 02a91e22f5..390cec01c7 100644
--- a/services/thumbnails/pkg/thumbnail/mimetypes.go
+++ b/services/thumbnails/pkg/thumbnail/mimetypes.go
@@ -2,21 +2,17 @@
 
 package thumbnail
 
-var (
-	// SupportedMimeTypes contains an all mimetypes which are supported by the thumbnailer.
-	SupportedMimeTypes = map[string]struct{}{
-		"image/png":                         {},
-		"image/jpg":                         {},
-		"image/jpeg":                        {},
-		"image/gif":                         {},
-		"image/bmp":                         {},
-		"image/x-ms-bmp":                    {},
-		"image/tiff":                        {},
-		"text/plain":                        {},
-		"audio/flac":                        {},
-		"audio/mpeg":                        {},
-		"audio/ogg":                         {},
-		"application/vnd.geogebra.slides":   {},
-		"application/vnd.geogebra.pinboard": {},
-	}
-)
+// UnconditionalPreviewMimeTypes always have a preview: the thumbnailer renders
+// one from the content.
+var UnconditionalPreviewMimeTypes = map[string]struct{}{
+	"image/png":                         {},
+	"image/jpg":                         {},
+	"image/jpeg":                        {},
+	"image/gif":                         {},
+	"image/bmp":                         {},
+	"image/x-ms-bmp":                    {},
+	"image/tiff":                        {},
+	"text/plain":                        {},
+	"application/vnd.geogebra.slides":   {},
+	"application/vnd.geogebra.pinboard": {},
+}
diff --git a/services/thumbnails/pkg/thumbnail/mimetypes_common.go b/services/thumbnails/pkg/thumbnail/mimetypes_common.go
new file mode 100644
index 0000000000..96f047c713
--- /dev/null
+++ b/services/thumbnails/pkg/thumbnail/mimetypes_common.go
@@ -0,0 +1,21 @@
+package thumbnail
+
+// EmbeddedPreviewMimeTypes have an embedded preview (e.g. audio cover art) that
+// may be absent; availability is decided per file (see HasPreview).
+var EmbeddedPreviewMimeTypes = map[string]struct{}{
+	"audio/flac": {},
+	"audio/mpeg": {},
+	"audio/ogg":  {},
+}
+
+// SupportedMimeTypes is the union of both preview sets; the generator gates on it.
+var SupportedMimeTypes = func() map[string]struct{} {
+	m := make(map[string]struct{}, len(UnconditionalPreviewMimeTypes)+len(EmbeddedPreviewMimeTypes))
+	for k := range UnconditionalPreviewMimeTypes {
+		m[k] = struct{}{}
+	}
+	for k := range EmbeddedPreviewMimeTypes {
+		m[k] = struct{}{}
+	}
+	return m
+}()
diff --git a/services/thumbnails/pkg/thumbnail/mimetypes_vips.go b/services/thumbnails/pkg/thumbnail/mimetypes_vips.go
index b94fafafaf..929718e7ad 100644
--- a/services/thumbnails/pkg/thumbnail/mimetypes_vips.go
+++ b/services/thumbnails/pkg/thumbnail/mimetypes_vips.go
@@ -2,22 +2,18 @@
 
 package thumbnail
 
-var (
-	// SupportedMimeTypes contains an all mimetypes which are supported by the thumbnailer.
-	SupportedMimeTypes = map[string]struct{}{
-		"image/png":                         {},
-		"image/jpg":                         {},
-		"image/jpeg":                        {},
-		"image/gif":                         {},
-		"image/bmp":                         {},
-		"image/x-ms-bmp":                    {},
-		"image/tiff":                        {},
-		"text/plain":                        {},
-		"audio/flac":                        {},
-		"audio/mpeg":                        {},
-		"audio/ogg":                         {},
-		"application/vnd.geogebra.slides":   {},
-		"application/vnd.geogebra.pinboard": {},
-		"image/webp":                        {},
-	}
-)
+// UnconditionalPreviewMimeTypes always have a preview: the thumbnailer renders
+// one from the content.
+var UnconditionalPreviewMimeTypes = map[string]struct{}{
+	"image/png":                         {},
+	"image/jpg":                         {},
+	"image/jpeg":                        {},
+	"image/gif":                         {},
+	"image/bmp":                         {},
+	"image/x-ms-bmp":                    {},
+	"image/tiff":                        {},
+	"image/webp":                        {},
+	"text/plain":                        {},
+	"application/vnd.geogebra.slides":   {},
+	"application/vnd.geogebra.pinboard": {},
+}
diff --git a/services/thumbnails/pkg/thumbnail/thumbnail_suite_test.go b/services/thumbnails/pkg/thumbnail/thumbnail_suite_test.go
new file mode 100644
index 0000000000..7217b6a146
--- /dev/null
+++ b/services/thumbnails/pkg/thumbnail/thumbnail_suite_test.go
@@ -0,0 +1,13 @@
+package thumbnail_test
+
+import (
+	"testing"
+
+	. "github.com/onsi/ginkgo/v2"
+	. "github.com/onsi/gomega"
+)
+
+func TestThumbnail(t *testing.T) {
+	RegisterFailHandler(Fail)
+	RunSpecs(t, "Thumbnail Suite")
+}
diff --git a/services/webdav/pkg/service/v0/search.go b/services/webdav/pkg/service/v0/search.go
index e2f6a3f4a4..8da71806d9 100644
--- a/services/webdav/pkg/service/v0/search.go
+++ b/services/webdav/pkg/service/v0/search.go
@@ -222,8 +222,7 @@ func matchToPropResponse(ctx context.Context, davPrefix, publicURL string, match
 	propstatOK.Prop = append(propstatOK.Prop, prop.Escaped("oc:permissions", match.Entity.Permissions))
 	propstatOK.Prop = append(propstatOK.Prop, prop.Escaped("oc:highlights", match.Entity.Highlights))
 	propstatOK.Prop = append(propstatOK.Prop, prop.Escaped("d:getcontenttype", match.Entity.MimeType))
-	_, isSupportedMimeType := thumbnail.SupportedMimeTypes[match.Entity.MimeType]
-	if isSupportedMimeType {
+	if thumbnail.HasPreviewForMimeType(match.Entity.MimeType, match.Entity.GetPreview() != nil) {
 		propstatOK.Prop = append(propstatOK.Prop, prop.Escaped("oc:has-preview", "1"))
 	} else {
 		propstatOK.Prop = append(propstatOK.Prop, prop.Escaped("oc:has-preview", "0"))