JSON Formatter & Validator
Format, validate and minify JSON instantly with our free online JSON Formatter. Fast, simple and browser-based.
How to Format JSON Online
JSON can become difficult to read when it is written on a single line or contains inconsistent spacing. Our JSON Formatter makes JSON easier to read and understand.
Paste Your JSON
Enter or paste your JSON into the input box.
Format or Minify
Choose Format JSON to make it readable or Minify to create a compact version.
Validate Your JSON
Use Validate to check whether your JSON syntax is valid.
Copy the Result
Copy the formatted or minified JSON with one click.
What Is JSON?
JSON stands for JavaScript Object Notation. It is a lightweight text-based format commonly used to store and exchange structured data between applications.
JSON is widely used in APIs, web applications, configuration files and software development because it is easy for both humans and computers to read and process.
JSON Formatter Features
Pretty Print
Format compact JSON with readable indentation and line breaks.
Minify JSON
Remove unnecessary whitespace to create compact JSON.
JSON Validation
Quickly check whether your JSON syntax is valid.
Browser-Based
JSON is processed directly in your browser without requiring an external API.
When Can You Use a JSON Formatter?
A JSON formatter can be useful for developers, students and anyone working with structured data.
- Formatting API responses
- Debugging JSON data
- Checking JSON syntax
- Reading minified JSON
- Preparing JSON for documentation
- Creating compact JSON for transmission
- Working with configuration files
- Testing JSON before using it in an application
JSON Formatter FAQ
What is a JSON formatter?
A JSON formatter takes valid JSON and adds indentation and line breaks to make the structure easier to read.
What is JSON validation?
JSON validation checks whether the provided text follows valid JSON syntax. Invalid JSON will produce an error instead of a formatted result.
What is JSON minification?
JSON minification removes unnecessary whitespace and line breaks to create a smaller JSON representation.
Is this JSON formatter free?
Yes. The tool is free to use and does not require registration or an account.
Is my JSON uploaded to a server?
No. The formatter uses your browser's built-in JSON functionality to process the data locally.
Can I use this tool for API responses?
Yes. You can paste JSON copied from an API response, format it for readability, validate it or minify it.