diff --git a/modules/images.py b/modules/images.py
index 39d9e7246..d8bda5e03 100644
--- a/modules/images.py
+++ b/modules/images.py
@@ -456,7 +456,7 @@ def atomically_save_image():
             pnginfo_data = PngImagePlugin.PngInfo()
             for k, v in params.pnginfo.items():
                 pnginfo_data.add_text(k, str(v))
-            image.save(fn, format=image_format, quality=shared.opts.jpeg_quality, pnginfo=pnginfo_data if shared.opts.image_metadata else None)
+            image.save(fn, format=image_format, optimize=True, compress_level=9, pnginfo=pnginfo_data if shared.opts.image_metadata else None)
         elif image_format == 'JPEG':
             if image.mode == 'RGBA':
                 shared.log.warning('Saving RGBA image as JPEG: Alpha channel will be lost')
@@ -464,7 +464,7 @@ def atomically_save_image():
             elif image.mode == 'I;16':
                 image = image.point(lambda p: p * 0.0038910505836576).convert("L")
             exif_bytes = piexif.dump({ "Exif": { piexif.ExifIFD.UserComment: piexif.helper.UserComment.dump(exifinfo, encoding="unicode") } })
-            image.save(fn, format=image_format, quality=shared.opts.jpeg_quality, exif=exif_bytes)
+            image.save(fn, format=image_format, optimize=True, quality=shared.opts.jpeg_quality, exif=exif_bytes)
         elif image_format == 'WEBP':
             if image.mode == 'I;16':
                 image = image.point(lambda p: p * 0.0038910505836576).convert("RGB")