Code Comparison
Compare two code snippets side by side with line numbers and highlighted additions and removals.
What the tool does
Code Comparison diffs two snippets with line numbers and highlighted additions/removals. Useful for reviewing patches, config changes, and small refactors.
How to use it
- Paste the old code in one panel.
- Paste the new code in the other.
- Scan highlighted lines to see what changed.
Supported formats
- Plain text / source code of any language
Privacy & security
This tool runs entirely in your browser. Your data never leaves your device — nothing is uploaded to our servers.
FAQs
- Which languages are supported?
- Any text-based code. Highlighting is about line differences, not language-specific parsing.
- Can I compare whole repositories?
- This tool is for snippet-level comparison, not full git repository diffs.
- Is code uploaded?
- No. Diffing happens in your browser.