JSON Formatter

JSON (JavaScript Object Notation) is a lightweight data format used for storing and exchanging data between servers and web applications. Formatting JSON makes it human-readable by adding proper indentation and line breaks, which is essential for debugging, reviewing API responses, and understanding data structures.

Yes, this JSON formatter is completely free with no limits. Format, validate, and minify as much JSON as you need without signing up or paying anything.

Absolutely. All JSON processing happens directly in your browser - your data never leaves your device or gets uploaded to any server. This makes it safe for formatting sensitive configuration files, API keys, or private data.

Formatting (beautifying) JSON adds indentation and line breaks to make it readable. Minifying removes all unnecessary whitespace to reduce file size, which is useful for production environments where smaller payloads improve performance.

The validator checks your JSON against the official JSON specification. It detects syntax errors like missing commas, unquoted keys, trailing commas, mismatched brackets, and invalid values.

Yes, you can drag and drop JSON files or click to browse and upload. The tool accepts .json files and will automatically process them.

You can choose from 2 spaces, 4 spaces, 8 spaces, or tabs for indentation. 2-space indentation is common for web development, while 4 spaces is the default for many languages.

Yes, once the page loads, you can format JSON without an internet connection. All processing is done client-side in your browser.