JSON Diff Online: Compare Two JSON Files
Compare two JSON documents and spot additions, deletions and changes, in your browser.
version 1 → 2tags − removed: ["a","b"]author + added: "Aurélien"🔒 100% client-side — no data sent
Compare two JSON files and instantly see the additions, deletions and changes highlighted by color. The comparison runs entirely in your browser: your data is never transmitted, guaranteeing complete privacy.
What is it for?
- ▸ Spot what changed between two API responses
- ▸ Verify a change in a configuration file
- ▸ Compare two versions of a translation file
- ▸ Debug a mismatch between expected and received data
FAQ
Is my JSON data sent to a server?
No, the comparison is performed locally by your browser. No data is uploaded or stored, so you can safely compare sensitive JSON.
Does key order affect the result?
No, in a JSON object the key order does not matter and the tool compares values by their key. However, the order of items in an array is meaningful, so a reordering will be flagged as a difference.
Does the diff handle nested JSON?
Yes, the tool walks through deeply nested objects and arrays and highlights each difference at the right level. You see exactly which property was added, removed or changed.