Paste two texts and instantly see word-level differences highlighted inside every changed line. Moved lines detected automatically. Nothing sent to our servers — ever.
Paste two texts above and click Compare
Differences highlighted word by word. Moved lines shown in blue. Press Ctrl+Enter to compare quickly.
See exactly which words changed, not just which lines.
Automatically detects when lines are moved, not deleted.
Export as PDF or Image. Share via link. Download as HTML.
All processing in your browser. Nothing sent to servers.
Everything you need to know about comparing texts online.
Paste your original text in the left box and modified version in the right. Click Compare to see additions in green, deletions in red, moved lines in blue, and word-level changes inline.
No. All comparison happens entirely in your browser using JavaScript. Your text never leaves your device.
Yes, completely free. No signup, no account, no limits.
Yes. For very large documents (100,000+ words), performance may vary. The algorithm uses optimized LCS (Longest Common Subsequence).
Upload .txt, .js, .ts, .py, .json, .html, .css, .md, .sql, .xml, and .csv files using the Upload File button on either panel.
Click Share Link after running a comparison. It copies a URL that encodes both texts — anyone with the link sees the same comparison instantly.