Diff Checker

Paste two versions of a text and instantly see what changed.

How to compare text

Paste the original on the left and the new version on the right. Lines that were removed are shown in red with −, added lines in green with +, and unchanged lines in normal text with their line numbers on both sides.

Uses

  • Spotting changes between two versions of a contract, agreement or document.
  • Comparing code, configuration files or JSON before and after an edit.
  • Checking what a colleague changed in a shared text.

Comparison happens entirely in your browser, so it's safe for private documents. For very large texts (thousands of lines), it may take a moment.

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