Diff Checker
Compare two texts line by line and highlight additions and deletions with a change counter. Runs locally in your browser.
Compare two texts line by line and highlight additions and deletions.
+0 additions · -0 deletions · 0 unchanged
No lines.
Output ready, 54 B
How to use Diff Checker
- Paste the original text in the left box and the changed text in the right box.
- Review the colored diff and the change counts.
- Copy results if needed.
Frequently asked questions
How are differences shown?
Added lines are highlighted green, removed lines red.
Is the comparison case-sensitive?
Yes. Lines must match exactly, including case and spacing.
Is my text uploaded?
No. Diffing runs entirely on your device.
What algorithm is used?
A line-based LCS (longest common subsequence) diff.
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