JSON Formatter & Validator
Format, beautify, minify, and validate JSON instantly. Paste your JSON, fix errors, view a tree structure, and copy clean output—fast and private in your browser.
Format, Validate & Minify JSON
Paste JSON below, then choose an action. Errors will be highlighted with line/column details.
Status
Formatted / Output
Tree View
How to Use This JSON Formatter & Validator
- Paste your JSON into the input box.
- Click Beautify to format or Minify to compress.
- Click Validate to check for syntax errors.
- View the Tree for easy navigation.
- Copy the result with one click.
Why Use This JSON Tool?
Fast
Instant formatting and validation directly in your browser.
Accurate
Pinpoints errors with line and column details.
Private
Your data never leaves your device—no uploads required.
What Is JSON?
JSON (JavaScript Object Notation) is a lightweight data format used in APIs, web apps, and configuration files. It’s human-readable and widely supported across programming languages.
Frequently Asked Questions
What does a JSON formatter do?
It formats raw JSON into a readable structure with indentation and line breaks.
What does a JSON validator do?
It checks whether your JSON is valid and highlights syntax errors.
Can I minify JSON?
Yes, use the Minify button to remove spaces and reduce file size.
Does this tool store my data?
No, everything runs locally in your browser.
