diff --git a/weed/operation/upload_content.go b/weed/operation/upload_content.go
index 884933f18..a6dde973f 100644
--- a/weed/operation/upload_content.go
+++ b/weed/operation/upload_content.go
@@ -27,6 +27,7 @@ type UploadResult struct {
 	Error     string `json:"error,omitempty"`
 	ETag      string `json:"eTag,omitempty"`
 	CipherKey []byte `json:"cipherKey,omitempty"`
+	Mime      string `json:"mime,omitempty"`
 }
 
 var (
diff --git a/weed/server/filer_server_handlers_write.go b/weed/server/filer_server_handlers_write.go
index b36333447..01f46a53b 100644
--- a/weed/server/filer_server_handlers_write.go
+++ b/weed/server/filer_server_handlers_write.go
@@ -186,6 +186,7 @@ func (fs *FilerServer) updateFilerStore(ctx context.Context, r *http.Request, w
 			Replication: replication,
 			Collection:  collection,
 			TtlSec:      int32(util.ParseInt(r.URL.Query().Get("ttl"), 0)),
+			Mime:        ret.Mime,
 		},
 		Chunks: []*filer_pb.FileChunk{{
 			FileId: fileId,
@@ -194,8 +195,10 @@ func (fs *FilerServer) updateFilerStore(ctx context.Context, r *http.Request, w
 			ETag:   ret.ETag,
 		}},
 	}
-	if ext := filenamePath.Ext(path); ext != "" {
-		entry.Attr.Mime = mime.TypeByExtension(ext)
+	if entry.Attr.Mime == "" {
+		if ext := filenamePath.Ext(path); ext != "" {
+			entry.Attr.Mime = mime.TypeByExtension(ext)
+		}
 	}
 	// glog.V(4).Infof("saving %s => %+v", path, entry)
 	if dbErr := fs.filer.CreateEntry(ctx, entry, false); dbErr != nil {
diff --git a/weed/server/volume_server_handlers_write.go b/weed/server/volume_server_handlers_write.go
index b6a242641..101be4c43 100644
--- a/weed/server/volume_server_handlers_write.go
+++ b/weed/server/volume_server_handlers_write.go
@@ -68,6 +68,7 @@ func (vs *VolumeServer) PostHandler(w http.ResponseWriter, r *http.Request) {
 	}
 	ret.Size = uint32(originalSize)
 	ret.ETag = needle.Etag()
+	ret.Mime = string(needle.Mime)
 	setEtag(w, ret.ETag)
 	writeJsonQuiet(w, r, httpStatus, ret)
 }