Diff Checker
Compare two texts and find the differences line by line.
Original Text
Modified Text
What is Diff Checker?
A diff checker compares two blocks of text line by line, highlighting additions, deletions, and unchanged lines. It's essential for code reviews, document comparison, and tracking changes between versions. The tool shows exactly what was added, removed, or stayed the same.
How to Use This Tool
- Paste your original text in the left panel
- Paste the modified text in the right panel
- Click 'Compare' to see the differences
- Green lines are additions, red lines are deletions
Common Use Cases
- Comparing code changes before committing
- Reviewing document revisions
- Finding differences between config files
- Verifying merge conflicts resolution
Frequently Asked Questions
What do the colors mean?
Green (+) indicates lines that were added in the new text. Red (-) indicates lines that were removed from the original. Gray lines are unchanged.
Does it compare character by character?
This tool compares line by line. If any character in a line changes, the entire line is marked as changed. For character-level diff, specialized tools are needed.
Is there a size limit?
The tool works best with texts up to a few thousand lines. Very large files may cause browser slowdown due to client-side processing.