🧑‍💻 Developer

JSON Tree Viewer

List every key path and value in a JSON document — handy for APIs.

Results

Paths

📊 JSON Tree Viewer chart

Character composition of the result: letters, digits, spaces, punctuation and other symbols.

What is the JSON Tree Viewer?

List every key path and value in a JSON document — handy for APIs. Listing every key path and value in JSON makes large API responses easier to explore and document.

JSON Tree Viewer – free online developer tool illustration
JSON Tree Viewer — free, exact and private.

How to use the JSON Tree Viewer

  1. Paste or type your json into the box (a sample is pre-filled so you can see how it works).
  2. Results update automatically as you type; you can also press Calculate.
  3. Read the output: paths.
  4. Use the 📊 chart to see the result visually, then copy or share it.

Formula and method

Recursive walk producing JSONPath-style keys

Where the JSON Tree Viewer helps in real life

An API returns deeply nested order data and you need the exact path to the shipping city. The viewer lists every path, such as data.order.shipping.address.city, next to its value.

A developer writing API documentation wants every field in a sample response listed without reading through hundreds of nested brackets.

Common mistakes to avoid

  • Pasting JSON that fails validation.
  • Hard-coding array positions that change between responses.
  • Overlooking fields whose value is null.
  • Pasting responses that contain access tokens or personal data.

💡 Practical tip: Array positions can change between responses, so avoid relying on fixed indexes where possible.

Illustration: a developer workspace with two monitors showing code and a chart
JSON Tree Viewer in everyday work — illustration.

Tips for better results

  • Search for field names in long outputs.
  • Validate JSON first.
  • Remove secrets before pasting.

Frequently asked questions

What does the JSON Tree Viewer do?

List every key path and value in a JSON document — handy for APIs.

How is it calculated?

The JSON Tree Viewer uses this method: Recursive walk producing JSONPath-style keys.

Is the JSON Tree Viewer accurate?

Yes. It uses standard formulas and exact constants, and the results are verified by our automated test suite. Values are displayed to up to 12 significant digits.

Is this tool free and private?

Yes — the JSON Tree Viewer is completely free with no sign-up, and it runs entirely in your browser, so the values you enter are never uploaded to our servers.

Related tools

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