Semantic
Key order never counts
Objects are compared by meaning, so reordered keys don’t show up as noise. Only real data changes do.
JSON Diff Checker · Semantic · Free
Compare JSON by meaning, not by text.
Paste two JSON documents and get every added, removed and changed value with its exact path. Key order is ignored; arrays are matched by id.
View
Key order is always ignored. Comments and trailing commas are allowed.
Results appear here.
Paste two JSON documents to see what changed
Get a clean list of added, removed and changed values with exact paths — key order never counts as a change.
How It Works
Three steps. No sign-up.
- 1
Paste or drop your original JSON on the left and the changed JSON on the right. Comments and trailing commas are fine.
- 2
Press Compare JSON. Key order is ignored and arrays of records are matched by their id automatically.
- 3
Review every added, removed and changed value by path — or switch to the side-by-side view — then export a JSON Patch.
Features
Built for real-world data.
Paths
Exact change paths
Every difference has a readable path like users[id=42].address.city, so you know exactly where it is.
Arrays
Smart array matching
Arrays of objects are matched by id, key, sku, email or name — even when items are reordered.
Validate
Errors you can fix
Invalid JSON is pinpointed by line and column with a plain-English hint. Click to jump straight to it.
Export
RFC 6902 JSON Patch
Download a standards-compliant JSON Patch that turns the original into the changed document.
Private
Nothing is uploaded
API responses, configs and secrets stay in your browser. The comparison never touches a server.
FAQ
Questions & answers
Does the order of keys matter?
No. Two objects with the same keys and values are equal no matter how their keys are ordered. The side-by-side view sorts keys so only real changes appear.
How are arrays compared?
Arrays of objects are matched by an id-like field (id, _id, uuid, key, code, sku, slug, email or name) when every item has a unique one. Other arrays are compared in order, or as unordered sets if you turn on “Ignore array order”.
Can I compare JSON with comments (JSONC) or trailing commas?
Yes. If strict parsing fails, comments and trailing commas are ignored automatically and the input is marked as lenient.
What is a JSON Patch?
JSON Patch (RFC 6902) is a standard list of add, remove and replace operations. Apply it to the original document to get the changed one — useful in APIs and migrations.
Is my JSON sent to a server?
No. Parsing and comparison run entirely in your browser, and history is stored only on your device.
Can “1” and 1 be treated as equal?
Yes. Turn on “Loose types” to treat numbers, booleans and their string forms as equal — handy when one API returns strings.
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