How to use this tool
- Paste a top-level JSON object and select the exact field-value rules to remove.
- Run Clean JSON object and inspect the output before replacing source data.
- Review the result and diagnostics before copying or downloading.
Private by default
Focused JSON Object Cleanup
Apply explicit field cleanup without sorting keys, changing array items, or inventing defaults.
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Your data stays in this browserInstantNo server round trips
PrivateBrowser-side processing
AuditableDocumented semantics
PortableCorrectly typed downloads
Category
JSON Object Cleanup: How to use this tool
Recursively remove selected null, empty-string, or empty-container fields from a top-level JSON object.
Apply explicit field cleanup without sorting keys, changing array items, or inventing defaults.
Open guide and examples
Example to try
Input JSON
{"name":"Ada","nickname":"","middleName":null,"profile":{"bio":null,"tags":[]},"roles":["admin",null]}Result
{
"name": "Ada",
"nickname": "",
"profile": {
"tags": []
},
"roles": [
"admin",
null
]
}Learn
Frequently asked questions
Is my data sent to a server?
No. The engine runs in your browser and applies local resource limits.
What happens with invalid input?
The tool reports a diagnostic and does not keep stale output.
What does JSON Object Cleanup produce?
It emits a recursively cleaned object without removing array items and preserves retained key order.
What limitation applies to JSON Object Cleanup?
Array items themselves are retained; object fields inside array elements are still cleaned recursively.