JSON Key Sorter & Alphabetizer
Sort JSON object keys alphabetically for cleaner diffs, code reviews, and deterministic fixtures without uploading data.
Input
Paste JSON to sort object keys
Sorted output
JSON with recursively sorted object keys
Paste valid JSON, choose an order, then sort the keys.
How to sort and alphabetize JSON keys
Paste a valid JSON object or array, choose ascending or descending order, then select Sort JSON. Every object is sorted recursively, including objects nested inside arrays. Array item order is intentionally preserved because changing it can change the payload's meaning.
Before and after: nested key sorting
An input such as {"z":1,"user":{"name":"Ada","id":7},"a":2} becomes {"a":2,"user":{"id":7,"name":"Ada"},"z":1} in ascending mode. Values stay attached to their original keys.
Descending mode reverses object-key order at every level. It does not reverse arrays.
Use sorted JSON for cleaner diffs
Normalize generated configs, snapshots, API examples, and fixtures before review so key-order noise does not hide real changes. After sorting both payloads, open JSON Compare to inspect path-level differences.
JSON key sorting questions
- Does sorting JSON change values?
- No. The sorter changes object-key order only; values remain attached to their original keys.
- Are JSON arrays reordered?
- No. Array entries remain in their original sequence because array order can carry meaning.
- Is JSON uploaded while sorting?
- No. Parsing and recursive key sorting run locally in this browser tab.
What this JSON Sorter does
Use this JSON key sorter to alphabetize object keys recursively in ascending or descending order for cleaner diffs and deterministic snapshots. Sorting keys makes generated JSON easier to review in pull requests and test fixtures while preserving array order.
When developers use it
- Normalize JSON before comparing files in Git or code reviews.
- Sort nested API responses, configuration objects, and fixture data.
- Prepare deterministic output for tests that compare JSON strings.
Privacy, input, and output
Sorting happens in browser memory only. PayloadHarbor does not store or upload the JSON document.
Paste valid JSON and run the sorter. The output preserves values while recursively ordering object keys; arrays keep their original item order.
Validation rules and limitations
- Input must be valid JSON.
- Only object keys are sorted; array entries are not reordered because that can change meaning.