JSON Deep Compare
This free JSON compare tool takes two JSON objects and tells you whether they are structurally identical, listing every difference by path when they aren't. Property order is ignored, and everything runs on your device so even sensitive payloads never leave your browser.
Deep compare two JSON objects. Property order doesn't matter — only structure and values.
How to use JSON Deep Compare
- 1 Paste your first JSON into the left box and your second JSON into the right box.
- 2 Each side is validated as you type and shows a green checkmark or the exact syntax error.
- 3 Read the verdict — Equal, or Not Equal with a count of differences.
- 4 Scan the differences list, where each mismatch is shown by its path and value.
- 5 Toggle 'Ignore array order' to treat arrays as sets or compare them position by position.
Frequently asked questions
Is my JSON uploaded to a server to compare it?
No. Both objects are parsed and compared locally in your browser with JavaScript. Nothing is sent anywhere, so it's safe for confidential or proprietary data.
Does property order affect the comparison?
No. The tool compares structure and values, not key order, so two objects with the same keys in a different order are reported as equal.
What does 'Ignore array order' do?
When it's on, arrays are compared like sets — the same items in any order count as equal. Turn it off to compare arrays strictly by position and flag differences per index.
Why does it say my JSON is invalid?
One side doesn't follow JSON syntax — often a missing comma, an unclosed bracket, single quotes, or a trailing comma. The tool shows the parser's error message so you can fix it.