Free online tools 3 of 4 live
These are built and hosted here, not a wrapper around someone else's API. Everything runs in the browser using Canvas and WebAssembly, so your file never leaves the device — you can watch the Network panel while using one.
No upload · no account · no watermark
Image Compressor Up to 80% smaller, nothing uploaded Live PDF Merge Combine up to 20 files locally Live JSON Formatter Format, validate, minify Live Background Remover Runs on-device, no server Soon
Why build these instead of linking out
Every "free online tool" link in a directory sends your file to somebody else's server, under their retention policy, with their limit on how many times a day you may do it. These four exist because that trade is unnecessary for the jobs below — a browser can do all of them locally.
- The file is decoded and re-encoded in the tab, never uploaded.
- No account, no watermark, no daily quota.
- Works offline after the first load.
- Source is readable — nothing is hidden behind an API.