Free Diff Checker & Text Comparison
Compare two texts or source code snippets to find differences, added lines, and removed words instantly.
How to Use the Free Online Diff Checker
A Diff Checker is an essential developer and writer utility designed to find and highlight the exact differences between two versions of text, source code, JSON configuration, HTML, or SQL scripts. Based on the Myers difference algorithm, it analyzes sequences line-by-line and character-by-character to locate additions, deletions, and subtle typographical alterations.
Key Comparison Features
Side-by-Side (Split) Comparison
View the original and modified documents adjacent to each other. Perfect for comparing code pull requests, configuration files, and legal contract clauses.
Inline / Unified Diff Output
Renders changes in a single contiguous chronological view with + and - indicators, identical to Git commit diffs.
Frequently Asked Questions (FAQ)
git apply or the Unix patch command.