JSON Key Extractor & Path Inspector

Extract all unique property keys, depths, and data types from complex JSON documents.

About this tool

Quickly inspect large API responses or configuration files to discover all available fields and their types.

How to use this tool

  1. Paste your JSON payload.
  2. Click Run JSON Key Extractor.
  3. Review the key summary table and copy the extracted schema.

How it works

Inspects all properties recursively, cataloging full dot-paths and their primitive or compound data types.

When to use this tool

  • Understanding unfamiliar third-party API payloads.
  • Creating database migrations and ORM models from sample data.

Frequently asked questions

Does it count keys inside arrays?

Yes, all array item fields are scanned and collected.

Limitations

Optimized for objects up to 10MB in browser memory.

Privacy

Zero cloud interaction.