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JSON Formatter

Beautify, minify, validate, and escape JSON data with tree view.

Tool Guide

What is JSON Formatter?

Beautify, minify, validate, and escape JSON data with tree view.

How to use?

  1. Input JSON: Paste long, unformatted JSON strings from APIs.
  2. Parse & Beautify: Automatically parses, colorizes, and expands into a collapsible tree.
  3. Debug & Extract: Quickly locate highlighted syntax errors or extract specific values.

Use Cases

API Packet Analysis

Beautify compact JSON intercepted by sniffers to easily verify fields against API docs.

Limits and data handling

  • Only valid JSON can be parsed; JavaScript comments, single quotes, and trailing commas may be rejected.
  • Formatting does not check whether values match your business rules.
  • Remove keys, tokens, and personal data before pasting sensitive content.

JSON is parsed, formatted, and viewed in the current browser and is not uploaded to a server.

Frequently asked questions

Why did formatting fail?

Check quotes, commas, brackets, and special characters. JSON does not support comments.

Does formatting change my data?

It changes spacing and line breaks for display, but does not validate business fields or fill missing values.

Can I paste sensitive API data?

Remove keys, tokens, phone numbers, and other private fields before using the tool.