Diff Checker

Compare Text/Code or JSON with side-by-side and unified diff views.

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How to use this tool (Beginner Guide)
  1. Choose the Mode: Text/Code for any plain text or source code, and JSON for JSON content.
  2. Paste your original content in Left and the updated content in Right.
  3. Optional: enable Options like Ignore whitespace, Trim line edges, Ignore blank lines, or Ignore case.
  4. Click Compare to generate the result (Side-by-side + Unified).
  5. Use Download .patch to export the unified diff (available for a limited time).
  6. If you are not sure, click Load example… to auto-fill test data and try the tool quickly.
Reset

Diff Result

Download .patch
Paste content on both sides and click Compare.