Text Diff Checker

The Text Diff Checker compares two blocks of text and highlights the differences line by line. It supports both unified and side-by-side views, making it easy to review changes between document versions, code revisions, or any text content. This free online diff tool runs entirely in your browser with no data sent to any server.

Ctrl/Cmd + Enter to compare

How to Use This Tool

  1. Paste or type the original text in the left textarea and the modified text in the right textarea.
  2. Click Compare or press Ctrl/Cmd+Enter to see the differences highlighted.
  3. Toggle between Unified and Side by Side views to inspect changes.
  4. Use the Clear button to reset both inputs and the diff output.

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