Diff Checker

Two versions.
Every change.

Original
Changed

Paste the original text on the left and the changed text on the right. Differences appear instantly below: removed lines in red, added in green, and changed lines show the exact words that changed. Switch between side-by-side and unified views.

What you can compare

  • Two versions of a contract, policy or essay to see exactly what changed.
  • Code snippets or config files (paste from your editor).
  • Product descriptions, translations or SEO copy before and after edits.
  • Lists of email addresses or IDs to spot additions and removals.

Reading the result

Removed lines are shown in red on the left, added lines in green on the right. Where a line was edited rather than replaced, the exact words that changed are highlighted, so small edits in long paragraphs are easy to spot.

Frequently asked questions

Is my text uploaded?
No. The comparison runs in your browser, so contracts, code and drafts stay on your device.
Can I ignore whitespace changes?
Yes — tick "Ignore whitespace" to skip differences in spaces and indentation.

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