JSON Formatter Online

Format, beautify, and validate your JSON data in real-time. Safe, fast, and processed entirely inside your browser.

Input JSON

Formatted Output

Indentation:

How to Use JSON Formatter Online

01

Paste your raw, minified, or messy JSON string into the input text editor.
02

Select your preferred indentation option (2 spaces, 4 spaces, or Tabs).
03

Click the "Format" button to beautify your JSON instantly, and click "Copy" or "Download" to save the formatted result.

2026-06-10 Guide

Learn various methods to format and beautify JSON, from browser-based tools to command-line utilities and IDE extensions.

2026-06-05 Guide

Discover the history, syntax, and use-cases of JSON, the web’s most popular data interchange format.

Q How does the JSON Formatter work?: Our JSON Formatter parses your input JSON and re-serializes it with your chosen indentation (2 spaces, 4 spaces, or Tabs). The process happens entirely in your web browser, ensuring complete privacy.
Q Is my JSON data sent to any server?: Absolutely not. All processing is executed client-side inside your browser. We do not transmit, save, or look at your data. It is 100% private.
Q What happens if there is an error in my JSON?: If the input JSON is invalid, the formatter will show a detailed syntax error message, including the error reason and position, helping you fix the invalid characters.

Validate JSON syntax with detailed line/column errors.

Pretty print your JSON with customizable indentation.

Explore JSON in a searchable, collapsible tree structure.

Compress JSON by removing spacing and empty lines.