Changed field
Input: {"active":true} vs {"active":false}
Output: Changed $.active: true -> false
Developer
JSON Diff Checker
Compare two JSON inputs semantically and list path-level changes locally.
Runs locallyNo uploadNo external API
Input
Output
Paste the original JSON on the left and changed JSON on the right.
Paste the original JSON on the left and changed JSON on the right.
Runs in your browser. Input is not uploaded or sent to an external API.
Related tools
How to use JSON Diff
Compare two JSON payloads by parsed value instead of raw text, so object key order does not create noisy changes.
- Paste or type your input.
- Load the sample if you want a quick check.
- Run the action, review the result, then copy only what you need.
Examples
Added field
Input: {"a":1} vs {"a":1,"b":2}
Output: Added $.b
Array change
Input: ["a"] vs ["a","b"]
Output: Added $[1]
Common use cases
Compare API responses
Format each response first, then diff the parsed values.
Check conversion results
Compare JSON before and after CSV conversion cleanup.
Review copy changes
For plain text comparison, use this only when the text is valid JSON.
Limitations
Large input guardrail
Large JSON is blocked before parsing to avoid freezing the tab.
Semantic, not textual
Whitespace and object key order are ignored after parsing.
FAQ
Does JSON Diff ignore key order?
Yes. Objects are compared by parsed keys and values, not textual key order.
Can it compare invalid JSON?
No. Each side must parse as JSON before diffing.
Is the diff uploaded?
No. Both inputs stay in the browser.