Shrink image size — JPG, PNG compression

Use this when you need to shrink a photo for an upload size limit, blog speed, or sending over a messaging app. Runs advanced compression engines like mozjpeg and oxipng right in your browser.

The file is never sent to a server — processed entirely in this browser

How to use Shrink image size

1Select multiple images.
2Set the quality (default 75), and a max width if needed.
3Click [Compress] to see how much smaller it is than the original, then download it individually or as a ZIP.

Frequently asked questions

What quality setting should I use?

For photos, 70–80 shrinks the file significantly with almost no visible difference.

Why does PNG shrink less?

PNG is a lossless format. Turning on [Reduce colors] shrinks it to 256 colors like TinyPNG, significantly reducing the file size.