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Squoosh

Google’s open-source image compressor that runs entirely in your browser.

★ 4.4
Our hands-on rating
FreeNo sign-up✓ Local processingVisit Squoosh ↗

✓ Pros

  • ✓100% client-side processing — nothing uploaded
  • ✓Open source
  • ✓Advanced codecs (AVIF, WebP, MozJPEG)

✗ Cons

  • ✗No batch processing in the web version
  • ✗Interface can overwhelm casual users

Personal hands-on rating (2026-08). Fast local compression with advanced codec options.

Best for

Users who want advanced, fully-local image compression.

Not for

Users wanting simple one-click batch workflows.