Text Diff
FREECompare two texts side by side and highlight the differences line by line.
Paste text in both panels to see the diff
📖 How to Use Text Diff
1
Paste original text in the left box
Enter your baseline or original version of the text.
2
Paste new text in the right box
Enter the updated or revised version.
3
View highlighted differences
Added text is highlighted in green, removed text in red, unchanged text in grey.
💡 Examples
Word-level diff
INPUT
Original: "The cat sat on the mat." → New: "The dog sat on the rug."→
OUTPUT
"cat" → "dog" (changed), "mat" → "rug" (changed)JSON diff
INPUT
Two JSON blobs with one field changed→
OUTPUT
Highlights only the changed key-value pair🚀 Pro Tips
✓Use the diff checker to review contract revisions, code comments, or article edits before publishing.
✓Compare configuration files (JSON, YAML, .env) to spot unintended changes during deployment.
✓For code reviews, paste the old function and the new version to quickly see what changed.
✓Normalise line endings (LF vs CRLF) before comparing to avoid false positives.