Side-by-side diff with added / removed highlights. Local only.
100% in your browser · no uploads · no ad trackers
About Text Diff
Text Diff compares two pieces of text side by side and highlights additions, deletions, and unchanged lines - like a lightweight code review for any kind of writing. Useful for spotting changes between contract revisions, reviewing edits to an article, or comparing two config snippets.
Original
Changed
Diff
+0−0=0
How to use
1.Paste original and new text.
2.See highlighted diff.
FAQ
Is the diff line-based or word-based?
It compares line by line and highlights which lines were added, removed, or kept the same.
Will it work with code?
Yes - any plain text works, including code, JSON, YAML, prose, or config files.
Is Text Diff free?
Yes. Every tool on docsntools is 100% free with no signup, no watermarks, and no upload limits.
Are my files uploaded to a server?
No. All processing happens entirely in your browser. Your files never leave your device.
Does it work on mobile?
Yes - every tool is responsive and works in modern mobile browsers (Chrome, Safari, Firefox).