How to use JSON Key Sorter
Sorting object keys creates deterministic JSON that is easier to compare across builds and environments. XXF sorts keys recursively while preserving the order of array items, where position often carries meaning.
The result is best used for fixtures, snapshots and human review. Applications should not rely on object-property order as a business rule, even though modern runtimes preserve a defined enumeration order in many cases.
A reliable workflow
- Paste a valid JSON value containing one or more objects
- Sort keys and choose the preferred indentation
- Compare the output before replacing a fixture or snapshot
Worked example
Sort the included object containing zebra, alpha and an array of objects
{"zebra":1,"alpha":{"z":2,"a":1},"items":[{"last":2,"first":1}]}alpha moves before zebra and nested object keys are sorted recursively. The array item stays in the same position while its own first and last keys are normalized
When this tool helps
- Stabilize test snapshots
- Reduce noisy configuration diffs
- Compare API objects produced by different systems
Accuracy and safety notes
- Arrays keep their original order
- Locale-aware alphabetical order may differ from a bytewise canonicalization specification
Frequently asked questions
Does XXF upload or store my data?+
No. The conversion runs locally in your browser. Your input is not sent to XXF, stored on a server or used for training.
Are array items reordered?+
No. Arrays keep their original order; only keys inside objects are alphabetized recursively.