Tools

API Response Comparator for JSON Diffs

Compare two JSON API responses and list differences by path.

API Response Comparator

Compare two JSON responses and see what changed at a glance. This helps teams validate API changes and catch regressions quickly.

How to use the API Response Comparator

  1. Paste the first JSON response.
  2. Paste the second JSON response.
  3. Click Compare to view differences.

Common use cases

  • Verifying API changes between releases.
  • Debugging inconsistent environments.
  • Comparing responses from different endpoints.
  • Reviewing data regressions in tests.

Tips & notes

  • Normalize responses before comparing when possible.
  • Large arrays can produce long diffs.
  • Review type changes carefully, not just values.

Related developer tools

  • API Payload Size Analyzer
  • JSON Formatter
  • JSON Schema Generator

FAQ

Does it support nested JSON?
Yes. Differences are listed by path.
Does order matter in arrays?
Array order is considered in comparisons.
Can I compare large responses?
Yes, but very large inputs may take longer to analyze.