Compare two texts, line diff
Side-by-side inputs, green/red line diff.
No uploads. No accounts. Runs in your browser.
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About this tool
Paste the original on the left and the changed version on the right; the diff below shows added lines in green and removed lines in red, computed with a proper longest-common-subsequence algorithm.
Use it for config drift, reviewing edits, comparing API responses or checking what a colleague changed in a snippet, without pasting your text into someone else's server. The comparison runs locally.
How it works
- Paste your input, or drop a text file onto the box.
- The output updates live as you type.
- Copy it to the clipboard, or download it as a file.