Text Diff Checker
Compare two texts side-by-side and highlight differences instantly
Removed Lines
0
Added Lines
0
Total Lines
1
Original
Modified
Text Diff Checker is a free online tool that compares two text documents side-by-side and highlights the differences. Perfect for developers, writers, and anyone who needs to track changes between versions. Instantly see what was added, removed, or modified with a clear visual representation of the changes.
Frequently Asked Questions
How does the diff comparison work? +
The diff checker compares the two texts line-by-line and then highlights exact character-level changes inside changed lines. Removed characters are shown in red and added characters in green.
Can I use this for code comparison? +
Yes! This tool works great for comparing code files, configuration files, or any text-based content. Perfect for code reviews and version control.
What do the colors mean? +
Red highlights removed lines (in the original text), green highlights added lines (in the modified text), and neutral color shows lines that remain unchanged.
Is my data private? +
Yes, completely private. All comparisons happen in your browser with zero data sent to any server.
How to Use
- 1
Enter two texts
Paste the original text in the left panel and the revised version in the right panel.
- 2
Compare
Click "Compare" — removed lines appear in red, added lines in green, and unchanged lines are neutral.
- 3
Review changes
Scroll through the diff to see exactly what changed between the two versions, line by line.
Frequently Asked Questions
- The tool compares text line by line. Lines only in the left (original) are shown in red. Lines only in the right (modified) are shown in green. Unchanged lines are neutral.