Developer Tools• Essential
JSON Formatter & Validator
Beautify cluttered JSON into clean, readable indentations, validate syntax, fix trailing commas, or compress into a minified single line.
Processed locally. Sensitive JSON payloads and API responses are never transmitted over the network.
Valid JSON Syntax
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How to Use JSON Formatter & Validator
1
Paste JSON
Paste raw JSON text into the editor or upload a .json file.
2
Choose Action
Click Format (2 or 4 spaces) or Minify.
3
Copy or Download
Copy the formatted JSON with one click or download the formatted file.
About JSON Formatter & Validator
Uses recursive AST parsing with `JSON.parse()` and customizable `JSON.stringify(data, null, indent)` replacers.
Supported Formats
JSONJSONCText
Key Features
- 2-space and 4-space indentation formats
- One-click JSON minification for bandwidth savings
- Real-time syntax validation with line/column error diagnostics
- Sort object keys alphabetically
Frequently Asked Questions
Yes, because execution happens entirely within your browser runtime without network calls.
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