How to use this tool
- Paste a top-level JSON array and choose only the removal rules you need.
- Run Clean JSON array and review the resulting array and removal count.
- Review the result and diagnostics before copying or downloading.
Private by default
Focused JSON Array Cleanup
Apply a small explicit cleanup policy while preserving the order of every retained item.
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UTF-8Ln 1, Col 1
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Your data stays in this browserInstantNo server round trips
PrivateBrowser-side processing
AuditableDocumented semantics
PortableCorrectly typed downloads
Category
JSON Array Cleanup: How to use this tool
Remove semantic duplicates and optional null or empty-string items from one top-level JSON array.
Apply a small explicit cleanup policy while preserving the order of every retained item.
Open guide and examples
Example to try
Input JSON
[1,1,null,"","active",{"b":2,"a":1},{"a":1,"b":2}]Result
[
1,
null,
"",
"active",
{
"b": 2,
"a": 1
}
]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 Array Cleanup produce?
It emits a cleaned array in original order, retaining the first semantic duplicate.
What limitation applies to JSON Array Cleanup?
Only top-level items are removed; nested arrays are not cleaned recursively.