JSON Formatter & Validator
JSON (JavaScript Object Notation) is the language of the web, but raw JSON data is often messy and hard to read. Our free online JSON Formatter allows you to beautify, validate, and analyze your JSON code instantly.
Whether you are a developer debugging API responses, a data analyst working with datasets, or a student learning data structures, our tool provides a clean, readable view of your data. It also includes powerful features like minification for production and detailed error reporting.
Key Features
Instant Formatting
Beautify ugly, minified JSON into a readable, tree-structured format with customizable indentation (2, 4, or 8 spaces).
Validation & Error Detection
Automatically check if your JSON is valid. If there's an error, we'll tell you exactly what went wrong.
Minification
Compress your JSON by removing whitespace to reduce file size for production environments.
Smart Statistics
Get detailed insights into your data, including total keys, depth, types, and file size.
How to Use This Tool
- ✓Paste your raw JSON code into the 'Input JSON' box on the left.
- ✓Click 'Format' to beautify the code or 'Minify' to compress it.
- ✓Use 'Validate' to check for syntax errors.
- ✓Select your preferred indentation size from the dropdown menu.
- ✓View the result in the 'Output' box and use 'Copy Output' to grab the code.
Frequently Asked Questions
Why is my JSON invalid?
Common issues include missing quotes around keys, trailing commas, or using single quotes instead of double quotes. Our validator helps identify these specific errors.
Is my data safe?
Absolutely. All processing is done locally in your browser using JavaScript. text never leaves your computer.
What is the difference between specific indent sizes?
2 spaces is standard for many JS projects (like React/Vue), while 4 spaces is common in Python or backend configs. 8 spaces is rarely used but helpful for deep nesting visibility.
Readable data is actionable data. Transform your raw strings into structured insights with our robust JSON Formatter and make debugging a breeze.