Free Online Tool - No Sign Up Required
Compare Text & Code Instantly
See exactly what changed between two files. Side-by-side or unified view with syntax highlighting for JSON, YAML, and more.
Compare Files Now - Free 100% Free No Data Stored Works Offline
Why Use Diff Checker?
Smart Comparison
Intelligent diff algorithm highlights insertions, deletions, and modifications.
Multiple Views
Switch between side-by-side and unified views based on your preference.
Instant Results
Real-time comparison as you type. No submit buttons, no waiting.
Everything You Need
- Side-by-side and unified diff views
- Syntax highlighting for JSON, YAML, TOML, and CSV
- Line-by-line change tracking
- Ignore whitespace option for cleaner diffs
- Copy differences with one click
- Works entirely in your browser
- Perfect for code reviews and debugging
- Mobile-responsive design