JSON Diff – Compare Two JSON Objects
Compare two JSON objects side by side and highlight the differences between them.
About the JSON Diff tool
This free JSON diff tool lets you paste or upload two JSON objects, then clearly see what has changed between them. It highlights added, removed and modified fields so you can debug API responses, config changes or version differences faster.
Key features
- Side-by-side JSON comparison.
- Highlight added, removed and changed keys.
- Copy diff results with one click.
- Client-side processing for better privacy (most tools).
Use cases
- Comparing API responses between environments.
- Reviewing JSON config changes before deploy.
- Debugging why an integration started failing.
- Comparing exported data snapshots.
Frequently Asked Questions
What is JSON diff?
JSON diff compares two JSON objects and shows you exactly which keys or values were added, removed or changed between them.
Is my data uploaded?
Most tools run locally in your browser. For tools that require network requests, the UI will indicate it.
Why is the result unexpected?
Double-check input format and options. Environment differences (timezone or encoding) can also affect outputs.
Is it free?
Yes. No signup required.