Text Diff Checker
Original Text
0 charactersModified Text
0 charactersDiff Results
No differences to show
Enter text in both fields to compare and see the differences.
About Diff Checker
Our free online Diff Checker compares two texts and highlights the differences between them. Perfect for comparing code versions, reviewing document changes, or finding subtle differences in configuration files. See additions, deletions, and modifications at a glance.
Key Features
Side-by-side View
See both texts with differences highlighted.
Multiple Modes
Compare by characters, words, or lines.
Color Coding
Green for additions, red for deletions, clear visual diff.
100% Client-side
All comparison happens in your browser - your data stays private.
Copy & Download
Export diff results for documentation.
Swap Texts
Easily swap the original and modified texts.
How to Use
- 1Paste the original text in the left panel.
- 2Paste the modified text in the right panel.
- 3View the highlighted differences instantly.
- 4Choose between character, word, or line comparison modes.
Pro Tips
- 💡Use line-by-line mode for code comparisons.
- 💡Word mode is best for document comparisons.
- 💡Character mode catches even single-character changes.
- 💡Swap texts to reverse the diff perspective.