Free tools
Compare two texts and see the differences.
Runs locally · nothing is uploaded
Additions in green, removals in red, in one view or side by side, with a count of what changed.
Line by line for documents and code, word by word or letter by letter to catch the small edits.
Contracts, code and drafts are compared in your browser and never uploaded.
A diff shows exactly what changed between two versions of a text, so you do not have to reread both side by side. Additions appear in green, removals in red, and everything else stays as it was, compared by lines, by words or by single characters.
It is the quickest way to check an edited contract, a revised policy or a config change before you accept it.
This tool is built by ToolClack and, like everything we make, it is local-first: your data stays in your browser.
Yes. Pick Lines, Words or Characters: lines suit long documents and code, words and characters show small edits inside a sentence. Lines can also be shown side by side.
No. Both texts are compared by your browser and never leave your device.
Documents of a few thousand lines compare comfortably; very large files may take a moment in slower browsers.
These tools are free and always will be. Our full products go further.
View all products