JSON Formatter & Beautifier
FreeFormat, beautify, and validate your JSON data with customizable indentation.
About JSON Formatter
Format and beautify your JSON data with customizable indentation. You can also minify JSON to reduce file size. This tool validates your JSON and shows helpful error messages for invalid syntax. All processing happens in your browser — your data is never sent to any server.
What is JSON?
JSON (JavaScript Object Notation) is a lightweight data interchange format that's easy for humans to read and write, and easy for machines to parse and generate. It's widely used for APIs, configuration files, and data storage.
Our JSON formatter helps you beautify minified JSON, validate syntax, and format data with custom indentation - all processed locally in your browser.
Features
- Format & beautify JSON
- Validate JSON syntax
- Minify JSON data
- Custom indentation (2/4 spaces, tabs)
- Error highlighting
- One-click copy
Common Use Cases
- Debugging API responses
- Formatting configuration files
- Validating JSON before deployment
- Minifying JSON for production
- Converting between compact and readable formats