JSON Sort
Sort JSON object keys alphabetically
Input
Sorted Output
What Is JSON Sort?
Ever opened a pull request and seen a massive diff just because someone added a key to a JSON config — and every other key shifted around? That's the problem sorted JSON solves. JSON object keys have no defined order in the spec (see RFC 8259), so parsers and runtimes can return them in any order. Sorting keys alphabetically gives you consistent, predictable output — great for git diffs, generating hashes, API testing, and reproducible test fixtures.
This tool sorts the keys of your JSON objects recursively. Nested objects get their keys sorted too. Arrays stay in place; only object keys are reordered. Processing runs in your browser.
How to Use This Tool
Paste Your JSON
Paste JSON into the left editor or upload a file. Use Sample for example data. The tool accepts any valid JSON.
View Sorted Output
The right panel shows the same JSON with keys sorted alphabetically. Nested objects are sorted recursively. Invalid JSON will show an error.
Copy or Download
Use Copy or Download to get the result. For formatting without sorting, use the JSON Formatter. For minifying, use the JSON Minifier.
JSON Sort Examples
Here is an example of sorting JSON object keys alphabetically. Nested objects are sorted recursively.
Example: Subscriber record with unsorted keys
Input (keys in arbitrary order):
Sorted output:
When Key Order Matters
Git diffs are cleaner when keys are sorted: changes stand out instead of being buried in reordered lines. Some systems use JSON stringification for hashing or signing; sorted keys make the output deterministic. In JavaScript, JSON.stringify does not guarantee key order. This tool gives you consistent output regardless of input order.
Frequently Asked Questions
How do I sort JSON keys alphabetically in JavaScript?
You can use JSON.stringify() with a replacer that sorts keys: JSON.stringify(obj, Object.keys(obj).sort()) for shallow sorting. For deep recursive sorting, you need a recursive helper function — which is exactly what this tool does for you, no code required.
Does sorting JSON keys change the data?
No. Only the order of keys changes. All values, nested objects, and arrays stay exactly the same. The output is semantically identical JSON — parsers treat it identically.
Why should I sort JSON keys?
The main reasons: cleaner git diffs (no more spurious changes when keys get reordered), deterministic output for JSON hashing or signing, and consistent test fixtures. If two objects have the same keys and values but different key order, they're logically equal — but a string comparison would call them different.
Are array elements sorted too?
No. Only object keys are sorted. Array order is preserved intentionally — sorting array elements would change the meaning of the data.
Is my data sent to a server?
No. Sorting runs entirely in your browser. Nothing is uploaded anywhere.
Related Tools
For JSON syntax, see RFC 8259 and MDN. The JSON specification at json.org defines the format. For command-line processing, jq supports sorting. Git diff benefits from sorted keys for cleaner comparisons. See also JSON.stringify(), Lodash sortBy, and Postman for API testing.