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Diff Tool
Compare two texts and highlight the differences — line, word or character level.
All processing happens locally in your browser. No data is sent to any server. GDPR/DORA compliant.
Diff Reference
Color Legend
- Red / strikethrough — removed
- Green — added
- Gray — unchanged
Unified Diff Format
---original file header+++modified file header@@ -a,s +b,s @@hunk header-line removed,+line added
Tips
- Ignore whitespace for re-indented code
- Ignore case for prose comparison
- Word / character mode for fine edits
- Upload files for larger texts
Algorithm
- Longest Common Subsequence (LCS)
- Minimal edit script (no naive line match)
- Common prefix/suffix stripped for speed
- Word-level intra-line highlighting