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JSON Sorter & Cleaner

Sort JSON keys A-Z or Z-A, remove nulls and empty values, deduplicate arrays, strip keys, and flatten or unflatten nested objects in one pass.

JSON Sorter & Cleaner

Presets:

Operations

Operation log

  • Sorted 4 keys A-Z (recursive)
  • Removed 1 null values
  • Removed 1 empty strings

Output JSON

3 operations applied

Updated . Provided as is. Check the output before you rely on it in production.

How to use JSON Sorter & Cleaner

  1. 1

    Pick operations

    Choose any combination of sort keys, remove nulls, remove empty strings, arrays or objects, deduplicate arrays, strip keys, flatten and unflatten, or start from a preset.

  2. 2

    Remove nulls before sending to a client

    Enable Remove Nulls to strip null values and shrink the payload your frontend has to null-check.

  3. 3

    Sort configuration files for version control

    Enable Sort Keys, with Recursive for every nesting level, so diffs only show real changes, not key reordering.

  4. 4

    Strip unwanted keys

    List keys to remove everywhere in the document, such as internal IDs or debug fields.

  5. 5

    Flatten and unflatten

    Convert nested objects to dot-notation keys for spreadsheets or databases, and unflatten them back. The operation log shows what changed at each step.

Questions and answers

How is this different from JSON Formatter?
JSON Formatter validates and prettifies JSON syntax. JSON Sorter & Cleaner transforms the data: sorting keys alphabetically, removing null values, deduplicating arrays, flattening nested objects, and stripping unwanted keys.
Can I sort keys recursively?
Yes, choose recursive sorting to sort keys at every nesting level throughout the entire JSON structure, or select top-level only to sort the root keys.
How does array deduplication work?
For arrays of primitives, it removes exact duplicates. For arrays of objects, items are compared by JSON serialization. The operation log shows how many duplicates were removed.
What does flatten do?
Flatten converts nested objects to flat key-value pairs with dot notation: {"user": {"name": "Alice"}} becomes {"user.name": "Alice"}. Unflatten does the reverse.
Can I combine multiple operations?
Yes, check multiple operations and they execute in sequence. The operation log shows exactly what changed at each step — how many keys sorted, nulls removed, duplicates found, etc.
For AI agents: how to call this tool

Machine-readable contract, endpoints and examples. Humans can ignore this section.

Best Path For Builders

Browser workflow

Runs instantly in the browser with private local processing and copy/export-ready output.

Browser Workflow

This tool is optimized for instant in-browser execution with local data handling. Run it here and copy/export the output directly.

/json-sorter-cleaner/

For automation planning, fetch the canonical contract at /api/tool/json-sorter-cleaner.json.