Text Diff Checker
Compare two blocks of text and see exactly what changed, line by line or word by word.
+1 -1
Diff
The quick brown fox jumps over the lazy dog.leaps over the lazy dog!
Both texts are compared entirely in your browser — nothing is uploaded.
Frequently asked questions
What's the difference between 'By line' and 'By word'?+
'By line' compares whole lines at a time — good for code or structured text. 'By word' compares individual words within a line — good for spotting small edits in prose.
Can I compare code with this?+
Yes — line-mode works well for code, though it doesn't understand syntax, just text.
Is either text uploaded anywhere?+
No — the comparison runs entirely in your browser.