YUCTS Tools

Image Compressor (JPEG, PNG, WebP)

Compress JPEG, PNG and WebP images in your browser and compare file sizes before and after. Adjust quality and maximum size; your photos are never uploaded.

  • Runs in your browser (no upload)

Up to 40 MB per file

75

Lower values give smaller files but lower quality. For photos, 70–80 is a good start.

How to use

  1. Choose or drag and drop images (up to 30).
  2. Pick the output format, quality and maximum long edge, then press "Start processing".
  3. Compare the sizes and download files one by one or all together as a ZIP.

FAQ

Are images uploaded?

No. Compression runs entirely in your browser and images never leave your device.

Why does my PNG barely shrink?

PNG is lossless, so re-saving it may not make it smaller. For photos, converting to WebP or JPEG usually reduces the size a lot.

What if the result is larger?

With "Keep the original file if it does not get smaller" turned on, you get the original file back (unless you asked for a smaller pixel size).

Notes & limitations

  • What you enter is processed only on this page and is not sent to YUCTS servers.
  • The compression ratio depends on the image content and the browser’s encoder.
  • Animated GIFs keep only the first frame. HEIC/HEIF cannot be opened.
  • Converting to JPEG turns transparency white. Metadata such as EXIF is not kept when re-encoding.