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JSON Formatter, Validator & Minifier
Beautify messy JSON data, find errors or minify it to a single line.
Runs in your browser, no data sent Free · No sign-up required
JSON formatting and validation
When working with API responses, configuration files, or database outputs, JSON data often arrives on a single line in a hard-to-read format. This tool instantly makes your data readable (beautify), catches syntax errors, and minifies it to a single line for production.
- Format: readable output with 2-space indentation
- Minify: removes whitespace and reduces file size
- Validate: if invalid, shows the location and cause of the error
Frequently Asked Questions
JSON (JavaScript Object Notation) is a lightweight data format that stores data as key-value pairs and is readable by both humans and machines. It is a standard used in APIs, configuration files, and data exchange.
Beautify makes JSON readable with indentation and line breaks; it is ideal for development and debugging. Minify removes all unnecessary whitespace and collapses it onto a single line; it reduces file size and speeds up data transfer in production.
This tool tries to parse your JSON; if it is valid you get a green confirmation, and if it is invalid it shows a description of the error. Common errors are: trailing commas, using single quotes instead of double quotes, and unclosed brackets.
Yes. All formatting and validation happens entirely in your browser. The JSON data you paste is never sent to any server, so you can safely process even sensitive configuration files.
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