Diff Checker
Text Difference Comparison: Compares two texts line-by-line or character-by-character, visually displaying added, deleted, and modified sections. Uses an algorithm similar to Git diff.
Algorithm: Myers Difference Algorithm - Standard diff algorithm used by Git, SVN, etc.
Enter text to compare...
Compare two texts line-by-line or character-by-character and highlight changes: added (green), removed (red), modified (yellow).
How to Use
- 1
Enter the original text on the left and the text to compare on the right.
- 2
Choose line or character diff mode.
- 3
Enable ignore-whitespace to hide formatting-only changes.
- 4
Run manual compare if needed.
Use Cases
Code Review
Quickly see what changed in code.
Document Versioning
Check differences between document revisions.
Translation QA
Compare source vs translated text or revisions.
Config Files
Review changes in JSON/YAML configuration.
What is a Diff Algorithm?
Overview of Myers diff, LCS, and differences between line/character modes.
Frequently Asked Questions (FAQ)
Q.Is my data safe?
A. Yes. All comparison runs locally in your browser.
Q.Line vs character diff?
A. Line is great for code; character is precise for prose.
Q.Large files?
A. Works within browser memory limits.
Other Useful Tools
Check out more developer tools
View All Tools