Diff Checker
Compare two text versions locally with line or word-level changes, and optionally ignore whitespace. Each input is limited to 100,000 characters and 1,000 lines; no files are uploaded.
A QUICK WALKTHROUGH
How to use this tool
- Enter original and changed text.
- Choose a line or word view and whether to ignore whitespace.
- Compare the versions and review the highlighted changes.
Line and word comparison
Compare text in a line view or highlight changed words within replacement lines. Ignore whitespace when formatting changes should not count. Comparison stays in your browser; each input is limited to 100,000 characters and 1,000 lines.
GOOD TO KNOW
Common questions
How much text can I compare?
Each input is limited to 100,000 characters and 1,000 lines; comparison is limited to 1,000,000 line pairs.
Can I ignore whitespace?
Yes. Enable whitespace ignoring when formatting differences should not count.
Are my texts uploaded?
No. Comparison runs locally in your browser.