Text & Writing Utilities · Free tool
Document Version Diff
Compare two versions of a document and see exactly what changed. Word-level or line-level. Browser-only — nothing uploaded.
Updated May 2026
+5 −3 ≈16
Diff
Hi team,
We will ship the v1v1.1 release on Tuesday.Wednesday.
Let me know if you have concerns.concerns or blockers.
— Jane
Algorithm: standard LCS (longest common subsequence). Works well for documents up to ~5,000 tokens. For source code or larger documents, dedicated tools (Git, VS Code diff, Beyond Compare) handle them more efficiently. All processing in your browser — nothing uploaded.
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What it does
Compare two versions of a document side-by-side. Word-level for prose; line-level for code or structured docs. Highlights additions in green, deletions in red strikethrough. Browser-only — works on documents up to ~5,000 tokens via standard LCS diff algorithm.
Embed this tool on your siteShow snippetHide
Paste this snippet into any page. Loads on-demand (lazy), no tracking scripts, and sized to most dashboards. Replace the height to fit your layout.
<iframe src="https://freetoolarena.com/embed/document-version-diff" width="100%" height="720" frameborder="0" loading="lazy" title="Document Version Diff" style="border:1px solid #e2e8f0;border-radius:12px;max-width:720px;"></iframe>How to use it
- Paste original (A) + revised (B) text.
- Pick word-level or line-level granularity.
- Read the highlighted diff.
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