Format, beautify, and validate JSON. Fast, free, no ads
Free Online JSON Formatter & Viewer
PlayCode's JSON formatter lets you beautify, validate, and view JSON data instantly. Unlike other tools cluttered with advertisements, our JSON viewer is completely free and ad-free. Your data is processed entirely in your browser, nothing is sent to any server.
How to Use This JSON Beautifier
- Paste your JSON data in the editor on the left (or drag & drop a file)
- Click Format to beautify with proper indentation
- Use Tree View to explore nested data structures
- Click any value in Tree View to see its JSON Path
- Download the formatted result as a file
Features
Monaco Editor
VSCode-powered editor with code folding, find & replace, and minimap
Interactive Tree
Type icons, expandable nodes, JSON path display, and copy actions
Sort Keys
Alphabetically sort all object keys for consistent formatting
Drag & Drop
Drop JSON files directly into the editor
Auto-Save
Your JSON is automatically saved and restored on reload
Share via URL
Generate a shareable link with your JSON encoded in the URL
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 the most common format for APIs, configuration files, and data storage in modern web applications.
JSON Syntax Quick Reference
Why Use an Online JSON Formatter?
Raw JSON from APIs or log files is often minified and hard to read. A JSON beautifier adds proper indentation and line breaks, making it easy to understand the data structure. Whether you're debugging API responses, editing configuration files, or learning about data structures, our JSON viewer helps you work faster.
Need to run JavaScript code that works with JSON? Try our JavaScript Compiler to test your code instantly.