PixelShrink compresses JPEG, PNG, WebP and GIF entirely on your device. Your images never leave the browser: no upload, no server, no account, no analytics, no ads. It's not the next big thing. It's a quiet tool for people who'd rather not send personal photos to a stranger's server just to shrink a file. Adjust quality, resize, convert, batch a folder, download as a ZIP. If a file would get bigger, it keeps the original. Works offline after the first visit. Open source, ~44 KB, strict CSP.