Text Diff Checker
Paste an original and a changed version to see what was added, removed or kept. Great for drafts, code and configs.
Frequently asked questions
How does the diff work?
It compares the two texts line by line using a longest-common-subsequence algorithm, marking lines that were removed, added or unchanged.
Can it compare words or characters?
This tool works at the line level, which is ideal for code, configs and prose. For finer detail, split changes onto separate lines first.
Is my text uploaded?
No. The comparison runs entirely in your browser.