image resizing: change jpeg default quality to 85

go/images/resizing.go

@@ -11,6 +11,11 @@ import (
 	"github.com/disintegration/imaging"
 )
 
+const defaultJpegQuality = 85
+
+// TODO resize image with vipsthumbnail
+// use `/dev/shm` as memory file system
+
 func Resized(ext string, data []byte, width, height int) (resized []byte, w int, h int) {
 	if width == 0 && height == 0 {
 		return data, 0, 0
@@ -34,7 +39,7 @@ func Resized(ext string, data []byte, width, height int) (resized []byte, w int,
 		case ".png":
 			png.Encode(&buf, dstImage)
 		case ".jpg", ".jpeg":
-			jpeg.Encode(&buf, dstImage, nil)
+			jpeg.Encode(&buf, dstImage, &jpeg.Options{Quality: defaultJpegQuality})
 		case ".gif":
 			gif.Encode(&buf, dstImage, nil)
 		}