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JSON Formatter & Validator

Format, validate, beautify, and minify JSON data online. Pinpoint syntax errors with line and column numbers and explore formatted JSON with syntax highlighting.

? How to use JSON Formatter & Validator

1 Paste raw or unformatted JSON code into the editor.
2 Click "Beautify" (choose 2 spaces, 4 spaces, or tabs) or click "Minify".
3 If there are syntax errors, view the exact error description and line number.
4 Copy the formatted JSON or download it as a .json file.

Key Features & Privacy Guarantee

Beautify with 2 spaces, 4 spaces, or tab indentation
Compact minification for production payloads
Real-time syntax validation with detailed error pointers
Interactive syntax coloring and one-click copy
🔒 Complete Privacy: All computations, conversions, and renders occur locally in your browser. No files or personal data are ever uploaded to any server.

About JSON Formatter & Validator

JSON Formatter makes messy JSON readable. Paste raw or minified JSON, choose 2-space, 4-space or tab indentation, and beautify it with one click. You can also minify it to shrink a payload for production.

The validator checks syntax as you work and reports an error description when something is wrong, such as a missing comma or an unquoted key. The result is color-coded and can be copied or downloaded as a .json file. Your data is processed in your browser and never uploaded, which matters when it contains API responses or tokens.

Common ways to use it

Read and debug an API response that arrives as a single long line.
Find the syntax error that makes a config file fail to parse.
Minify JSON before embedding it in code or sending it over a network.