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JSON Key Extractor Examples

Review practical JSON Key Extractor examples so you can understand expected input, output, and common patterns faster.

Why examples matter for JSON Key Extractor

Use this JSON Key Extractor to list keys and nested key paths from JSON data. It is useful for API inspection, schema review, payload discovery, documentation work, test preparation, and understanding unknown JSON structures before mapping or transforming them. Paste a JSON object or array and get a clean list of unique paths in dot notation.

Example pages are especially useful for developer tools because they show what good input looks like, what kind of output to expect, and how the tool behaves in common scenarios.

JSON Key Extractor examples

Extract keys from a simple object

Input

{"name":"John","age":30}

Output

[
  "$.age",
  "$.name"
]

Useful when you only need a quick field list from a small object.

Extract nested keys from an API payload

Input

{"user":{"id":7,"name":"Anna"},"roles":[{"type":"admin"}]}

Output

[
  "$.roles",
  "$.roles[]",
  "$.roles[].type",
  "$.user",
  "$.user.id",
  "$.user.name"
]

Useful when reviewing nested response fields before writing mappings or tests.

How to use these examples

  1. Paste a JSON object or array into the input box
  2. Click Run Tool to extract keys
  3. Review the unique key paths in the output
  4. Use the result for API mapping, docs, or transformation planning
  5. If needed, compare the same payload later with JSON Diff Checker

Common mistakes in sample input

The pasted JSON is invalid

Fix: Validate or format the JSON first before extracting keys.

The user expects values instead of only keys

Fix: Use JSON Path Finder if you need to search by key names and inspect matching values.

Arrays are expected to show every index separately

Fix: This tool uses [] notation for array structure instead of listing every numeric index.

Only part of the payload is pasted

Fix: Paste the full JSON structure so all keys can be discovered.

Repeated keys appear in many objects

Fix: The extractor returns unique paths so repeated structures do not flood the output.

Next steps

After reviewing these examples, run the live tool with your own input. If your task involves a follow-up step, the related page can help you move to the next tool in the workflow.

Run the main tool

Open the main JSON Key Extractor page and test your own real input.

Open JSON Key Extractor