Search tools...⌘K
JSON Viewer & Formatter
View, format, validate, and minify JSON data.
Input
Output
How to Use
- 1
Paste your JSON
Copy your JSON data from any source and paste it into the input textarea. The viewer updates automatically.
- 2
Explore the Data
Use the + and - icons to expand or collapse objects and arrays to navigate complex structures easily.
- 3
Export or Copy
Use the toolbar to Copy, Download, or Share your formatted JSON.
Frequently Asked Questions
JSON (JavaScript Object Notation) is a lightweight data interchange format that is easy for humans to read and write, and easy for machines to parse and generate. It's the most popular format for transmitting data between web servers and applications, used in REST APIs, configuration files, and data storage.
Formatting (or beautifying) JSON adds proper indentation and line breaks to make the data human-readable. Minifying removes all unnecessary whitespace, reducing file size for faster transmission over networks. Both operations don't change the actual data.
Yes, completely. This JSON viewer runs entirely in your browser using JavaScript. Your data is never sent to any server. When you paste JSON, it's processed locally on your device. Once you close the tab, the data is gone.
Common JSON syntax errors include: missing or extra commas, unquoted property names, single quotes instead of double quotes, trailing commas after the last item, and unescaped special characters in strings. Our tool highlights where the error occurs.
Yes! Since processing happens in your browser, there are no server upload limits. The only limitation is your device's memory. Most modern browsers can handle JSON files of several megabytes without issues.