Text Diff Checker
Text Diff Checker compares two versions of text line by line and highlights what was added and removed — useful for proofreading, code and config changes.
🔒 Compared locally in your browser.
How to use Text Diff Checker
- Paste the original text on the left.
- Paste the changed text on the right.
- Review the highlighted differences.
Frequently asked questions
How does it compare?
It uses a line-based longest-common-subsequence diff, marking lines as added, removed or unchanged.
Is there a size limit?
It works on large texts, limited only by your device's memory.
Is my text uploaded?
No, the comparison runs entirely in your browser.
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