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Diff Checker

Compares two texts and highlights character-level differences, with options for case sensitivity and whitespace ignoring, and supports merging changes.

This tool compares two texts and highlights differences at the character level, solving the problem of quickly identifying exact changes in code, documents, or configuration files. It is designed for developers, IT professionals, and support teams who need to review code, audit configs, or check documents, and it is also useful for individual users. The comparison happens locally in the browser, ensuring privacy and offline functionality, and it offers both split and unified views with options to ignore case or whitespace.

Key features

  • Character-level difference highlighting
  • Split and unified diff views
  • Case sensitive toggle
  • Ignore whitespace toggle
  • Merge mode with accept/reject
  • Collapsible unchanged regions
  • Local browser processing
  • Supports up to 25,000 lines
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ICP
  • Software developers
  • IT teams
  • Customer support teams