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JSON Structure Inspector
Count parsed JSON nodes, value types, members, array entries and every depth without converting numeric tokens.
UTF-8 JSON file, Pasted strict JSON
JSON structure report
Browser only
Runs locally in your browser. Your files, pasted content and generated output are not uploaded. Reset clears this tool’s working data.
This tool needs JavaScript. If it does not load, refresh the page and try again.
How to use this tool
- Paste strict JSON or select a JSON file; the file takes precedence.
- Select Inspect JSON structure.
- Download json-structure.json and read the complete type totals and depth histogram.
Examples
For {"x":[1,null]}, there are four value nodes at depths 0,1,2,2; object keys are not separate value nodes.
Limitations
- 5 MiB input, maximum depth 40, 200,000 parsed value nodes, 10,000 units per numeric token, 1 MiB report and 30 seconds.
- This describes decoded JSON values, not whitespace, escape spellings, source byte distribution or key-name samples.
- No JSON Schema generation, numeric range certification, schema inference or personal-data classification.
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