How it works
- Drop your file or paste your content into the tool above.
- Adjust the options — every change updates the preview instantly.
- Download the result. Your file never leaves your browser.
Compare two text snippets side by side. Line, word, or character diff with additions and deletions highlighted.
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Every conversion runs entirely in your browser using WebAssembly. There is no upload, no server-side processing, no analytics, and no cookies. Open DevTools → Network during the operation and you will see zero outbound traffic.