Text & Code Diff Checker
Compare two text or code blocks line by line and see additions, removals, and unchanged content instantly.
100% browser-based processing: content is not stored.
How to use the diff checker
Paste two versions of text or code to see which lines were added, removed, or unchanged. Options let you ignore whitespace and case differences.
Frequently Asked Questions
Are my texts uploaded?
No. Comparison runs locally in your browser.
What does ignore whitespace mean?
It compares lines without considering spaces or tabs, which is useful for reviewing formatting changes.