Development Tool

Text Diff

Code review: Compare before and after refactoring to verify changes
Configuration diffs: Spot differences between environment configs
Document comparison: Find changes between document versions
API responses: Compare API response payloads to track changes
Debugging: Diff log outputs to isolate issues

Compare two text blocks and visualize differences line by line with word-level highlighting. Everything runs locally in your browser.

Original

Modified

Paste your original and modified text above to compare

Or click "Load Sample" to see an example

All processing happens in your browser. No text data is sent to any server or stored anywhere.

Modified lines show inline word-level highlighting so you can see exactly what changed within each line.

Diff is computed in real time as you type using a Longest Common Subsequence algorithm.