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Image Tools

Image Format Optimizer

Tries WebP, JPEG and PNG and keeps the smallest - or the best quality that fits under a size limit.

  • Runs in your browser
  • Batch
  • Works on mobile
  • In: JPG, PNG, WEBP, GIF, BMP, AVIF
  • Out: WEBP, JPG, PNG
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About Image Format Optimizer

Two goals. "Smallest at this quality" encodes the picture in each format and keeps the smallest file. "Under a file size" searches for the highest quality that still fits - useful for portals that refuse anything over 100 KB or 500 KB.

The result note lists what the other formats would have cost, so you can see why the winner won. Images with transparency skip JPEG unless you allow it to be flattened.

How to use it

  1. 1Drop your JPG, PNG, WebP and GIF files into the box, paste them, or tap browse.
  2. 2Adjust the settings if the defaults are not what you need.
  3. 3Run the tool. The work happens on your own device.
  4. 4Download each result, or all of them as one ZIP.

Questions

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