🛡️ 100% Browser Local Execution · Zero Upload Privacy · Instant Speed
Code & Text Diff Checker (Line-by-Line Comparison)
Compare two versions of code, JSON configs, or articles locally in your browser with added/removed line highlighting.
📖 How to Use & Technical Guide
- Paste the original text or code into the left box and the modified version into the right box.
- Toggle options such as 'Ignore whitespace' or 'Case-insensitive comparison'.
- Inspect the unified diff output below with green (+) additions, red (-) deletions, and change statistics.
❓ Frequently Asked Questions
Can I compare proprietary source code or .env files safely?
Yes! The LCS diff algorithm runs 100% locally in your browser tab without any network calls.