toolvio.

Image compressor

Reduce photo file size with a quality slider and optional resize.

Runs locally in your browser. Nothing is uploaded.

How to use

  1. Choose an image.
  2. Adjust quality and, if needed, the maximum width.
  3. Compare sizes and download.

Questions

What quality should I use?

75–85 is usually indistinguishable from the original for photos while cutting size by half or more.