Diff Checker
Compare two texts side by side and highlight the differences between them.
100% Client-Side
What is Diff Checker?
A diff checker compares two blocks of text side by side and highlights the differences between them. It's used by developers for code reviews, writers for revision tracking, and anyone who needs to spot what changed between two versions of a document.
How to Use
- Paste the original text in the left panel
- Paste the modified text in the right panel
- Click compare to see highlighted differences
- Added lines appear in green, removed lines in red, and changed words are highlighted inline
Frequently Asked Questions
- What types of differences does it detect?
- The tool detects added lines, removed lines, and modified content. Inline mode highlights specific changed words within a line, while line mode compares whole lines.
- Can I compare files, not just text?
- Paste the file contents into each panel. For large code files, most diff tools handle thousands of lines efficiently with syntax-aware comparison.
- What does 'unified diff' format mean?
- Unified diff shows changes in a single view with + for additions and - for deletions, prefixed with line numbers. It's the standard format used by Git and most version control systems.