Text and JSON Diff Checker

Compare two snippets line by line. Use JSON normalize mode to compare formatted object output before reviewing changes.

Reference

Diff notes

What is Diff?

A diff compares two versions of text and identifies lines that were added, removed, or changed.

How does the Diff tool work?

The diff checker splits both inputs into lines, compares matching positions, and labels each line as unchanged, added, removed, or changed. JSON normalize mode pretty prints both JSON values before comparison.

When should you use Diff?

  • Comparing API responses before and after a change
  • Reviewing configuration differences
  • Checking generated JSON fixtures
  • Spotting small text changes in logs or snippets

What are the limitations of Diff?

  • Line-based comparison does not compute a full semantic diff
  • Large documents may be easier to review in a dedicated diff tool
  • JSON normalize mode requires valid JSON on both sides

Diff examples

text foo -> bar -> Changed line
json {"tools":11} vs {"tools":21} -> Changed value after normalization
added new line -> Added line marker
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