JSON Key Sorter

How to use this developer tool

1. Paste json to sort or load a local file.
2. Review any available processing options.
3. Select Sort Keys or press Ctrl/Cmd + Enter.
4. Check the summary and diagnostics, then copy or download the result.

What this developer tool does

Put JSON object keys into a predictable order without changing array order or primitive values. Sorting is recursive by default, so nested objects become stable as well. You can switch between ascending and descending order and choose whether nested keys should be touched. The output is formatted JSON ready for snapshots, fixtures, reviews, or version control.

Nothing is uploaded by the core tool. Closing or refreshing the tab clears the current input.

Example

Input

{
  "z": 1,
  "a": {
    "d": 4,
    "b": 2
  },
  "items": [
    {
      "y": 2,
      "x": 1
    }
  ]
}

Result

Run the sample to see the generated result and its statistics.

Use cases

• Review API payloads and fixtures before committing them.
• Diagnose generated JSON during development or testing.
• Prepare documentation, migrations, and typed interfaces.

Tips for reliable output

• Keep a copy of the original input before applying structural changes.
• Run invalid and edge-case samples as well as the happy path.
• Review warnings instead of treating generated output as a final contract.
• Use version control when replacing schemas or fixtures.
• Test downstream consumers after changing keys or required fields.

Processing details

JSON Key Sorter runs with standard browser JavaScript and uses JSON syntax as defined by JSON.parse except where raw-source inspection is required.

Application-specific validation rules and remote references are not inferred. Very large documents are limited by the memory available to the browser tab.