About Diff Checker & Code Comparator
Compare two files, source code snippets, or texts line-by-line. Highlights added lines in green, removed lines in red, and provides addition and deletion counters.
Key Capabilities & Features
- Line-by-line comparison with + addition and - deletion indicators
- Summary badges for total lines added and removed
- Side-by-side text editors for original and modified versions
- Client-side algorithm runs instantly with zero delay
How to Use Diff Checker & Code Comparator
1
Enter Original Text
Paste the original code or document into the first box.
2
Enter Modified Text
Paste the modified version into the second box.
3
Review Diff
Inspect color-coded differences and line numbers below.
Privacy & In-Browser Execution Guarantee
100% private in-browser comparison. Proprietary code is never uploaded.
Frequently Asked Questions
How does the diff algorithm match lines?
The algorithm compares lines sequentially with lookahead indexing to identify inserted, modified, and removed lines.