📄 Text Diff Checker
Compare two versions of text or code side by side
Compare by:
Original Text
Modified Text
Compare two blocks of text side by side and see exactly what was added, removed or changed. Useful for reviewing document revisions, comparing config files or checking what an edit actually changed — the comparison runs in your browser, so nothing is uploaded.
Frequently asked questions
How do I compare two texts for differences?
Paste the original in one panel and the modified version in the other. The differences are highlighted — additions and deletions are marked so you can scan straight to what changed instead of reading both versions line by line.
Can I compare code or config files?
Yes — paste the contents of both versions. It compares plain text, so it works for code, JSON, YAML, SQL or prose alike. It does not understand syntax, so reordered but equivalent code still shows as a difference.
Is my text private when comparing?
Yes. Both texts are compared locally in your browser using JavaScript — nothing is sent to a server, so contracts, code and confidential documents are safe to compare here.