JSON Diff
Compare two JSON values and see exactly what changed, listed by path.
- Runs in your browser
- Nothing uploaded
- Free, no sign-up
Processed locally in your browser. Your JSON never leaves this tab.
How to Use JSON Diff
- Paste JSON in box A. The first value to compare.
- Paste JSON in box B. The second value to compare.
- Compare. Differences are listed by path.
- Copy the result. Click Copy result. It all runs in your browser.
Frequently Asked Questions
How are differences shown?
Each change is listed by its path, with a plus for added keys, a minus for removed keys, and a tilde for changed values.
Does it compare nested data?
Yes. It walks both values recursively, so deeply nested changes are reported with their full path.
What if the two are the same?
It tells you the two JSON values are identical, so you know nothing changed.
Is my data sent anywhere?
No. The comparison runs entirely in your browser, so your JSON never leaves the tab.
Is it free?
Yes. Every tool here is free to use with no sign up.
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