Text Diff
Paste two versions of any text — an old draft and a new one, a quote and a contract, two log files, two emails — and instantly see what changed. Choose line, word or character granularity. Added chunks are prefixed with `+`, removed chunks with `-` and unchanged with two spaces. Counts of added, removed and unchanged chunks appear below. The comparison runs entirely in your browser — nothing is uploaded.
Privacy
Runs entirely in your browser — nothing is sent to any server.
Cost
Free. No sign-up, no watermark.
Type
Comparer
Related tools
Tools that work with the same formats — most users open one of these next.
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Frequently asked
Is Text Diff free to use?
Yes. Text Diff is completely free with no sign-up, no watermark, and no usage limits. Toolsly does not charge for any of its tools.
Do my files and data stay private?
Yes — Text Diff runs entirely in your browser using your device's CPU. Files and text are never uploaded to our servers, so your data stays private.
How does Text Diff work?
Open Text Diff, paste or fill in the input fields, and the result updates instantly. Everything runs in your browser — no upload, no waiting.
Which browsers does Text Diff support?
Any modern browser works — Chrome, Firefox, Safari, and Edge on desktop and mobile. Text Diff uses standard web APIs and does not require any plugin, extension, or sign-up.