What Is JSON Key Sorting?
JSON key sorting reorganizes all object keys in alphabetical order at every nesting level. This ensures consistent, predictable JSON output — essential for version control diffs, API testing, and canonical JSON forms.
Key sorting is useful for:
- Version Control: Meaningful diffs without key-order noise.
- API Testing: Predictable response comparison.
- Canonical JSON: Cryptographic signing and verification.
- Code Review: Consistent JSON formatting in PRs.
How to Sort JSON Keys Online
- Paste your JSON: Enter JSON with any key order.
- Click Sort Keys: All keys are sorted alphabetically.
- Copy the result: Use the consistent output anywhere.
Frequently Asked Questions
Are nested object keys sorted too?
Yes. The tool recursively sorts keys at every level of nesting.
Are array elements sorted?
No. Array order is preserved. Only object keys are sorted.
Is this tool safe?
Yes. Processing is 100% client-side.
Related Tools
- JSON Formatter — Pretty-print JSON
- JSON Remove Nulls — Clean null values from JSON