JSON Compare

Compare two JSON documents and highlight added, removed, and changed paths.

How to use

1Paste the original document into Left JSON and the candidate into Right JSON.
2Click Compare to validate both sides and list added, removed, and changed paths.
3Review the summary counts, then open each diff card for path-level details.
4Use Copy to export the diff summary, or Clear to reset both editors.

Frequently asked questions

Is comparison done on my device?

Yes. Both documents are parsed and diffed in your browser. Nothing is uploaded.

How are nested differences shown?

Each difference includes a path such as $.user.email or $[0].id, plus the left and right values when a field changed.

Does order matter in objects?

Object key order is ignored for equality. Array index order matters, so rearranged items may appear as removed and added.

Why are identical files still different?

Spacing does not matter after parse, but number/string type mismatches, null vs missing keys, and array reordering do. Validate both sides as JSON first.