Shrinkray: a free, 100% in-browser image compressor (no uploads, open source)

Shrinkray is a free, open-source image compressor that runs entirely in the browser, allowing users to compress images without uploading them to a server. This is a privacy benefit for users who don't want to share their images with third-party services. Shrinkray supports various image formats, quality settings, and batch processing, and is available as a PWA that works offline. Users can install it from the GitHub repository and provide feedback on future features. The tool achieves significant size reductions, up to 90%, without visible quality loss.