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Squoosh

Open-source image compression web app by Google Chrome Labs that processes images entirely locally, supporting numerous formats without uploading files to a server.

Alternative to: TinyPNG and Adobe Photoshop
Image Compression Privacy Focused Open Source Web App PWA No Upload Local Processing Image Tools
Visit Website GitHub
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About Squoosh

Squoosh is an open-source image compression web app developed by Google Chrome Labs. It reduces image file sizes across numerous formats including WebP, AVIF, JPEG, PNG, and more, with side-by-side before and after comparison. All image compression happens entirely in the browser using local processing, meaning images are never sent to a server. Squoosh does use Google Analytics to collect basic visitor data and before/after image size values, as well as installation details if used as a Progressive Web App. The app can be run locally for development using Node.js and npm, and is fully open to community contributions.

Key Features

  • Local-only image compression — no server upload
  • Supports numerous image formats (WebP, AVIF, JPEG, PNG, and more)
  • Before and after size comparison
  • Progressive Web App (PWA) installable
  • Runs entirely in the browser
  • Open-source with active community contributions
  • Simple local development setup via npm
  • Built and maintained by Google Chrome Labs
  • Apache 2.0 licensed open-source project

Useful Links

Official Website GitHub Documentation
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