JSON Formatter & Validator Online Free โ Beautify, Minify, Validate JSON | DevToolBox
Free online JSON formatter and validator. Beautify, minify, and validate JSON with syntax highlighting and error detection. Paste JSON, get formatted output instantly.
What is JSON Formatter?
JSON (JavaScript Object Notation) is a lightweight data-interchange format. This JSON formatter tool helps you format, beautify, minify, and validate JSON data. Simply paste your JSON, click Format, and get a clean, readable output. Perfect for debugging API responses, config files, and data processing.
Features
- Format & beautify JSON with custom indentation (2, 4, or 8 spaces)
- Minify JSON for production use
- Validate JSON syntax with detailed error messages
- 100% client-side processing โ your data never leaves your browser
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โBuy Me a CoffeeHow to Use
- Paste your JSON data into the input field on the left
- Choose your preferred indentation (2, 4, or 8 spaces)
- Click 'Format / Beautify' for readable output, or 'Minify' for compact output
- Copy the result using the copy button
Common Use Cases
- Debugging API responses and payloads
- Formatting configuration files (package.json, tsconfig.json)
- Validating JSON data before processing
- Minifying JSON for production use