JSON Diff Checker

100% Client-Side. Your API keys & data never leave this browser.

Why use this Secure Diff Tool?

Debug Configs & APIs Safely

Developers often struggle to find small changes between two complex JSON files (like package.json, AWS IAM policies, or huge API responses). This tool acts as a semantic diff checker that highlights added and removed lines.

  • ✅ Find silent API breaking changes.
  • ✅ Debug environment variable mismatches.
  • ✅ Clean up messy JSON structures.

Is it safe for API Keys?

Yes. Unlike other diff tools, we do not have a backend database. Your keys and customer data stay in your RAM.

Verify it yourself:

You can turn off your WiFi before hitting "Compare". This tool will still work perfectly, proving that no data is being sent to the cloud.

What should we build next?

Rate your experience or recommend a new tool.