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JSON Formatter & Validator

Q: What is the difference between Beautify and Minify?

Beautify (also called pretty-print) adds indentation, line breaks, and spacing to make JSON easy to read for humans. Minify removes all unnecessary whitespace and newlines to produce the smallest possible JSON string, which is ideal for production APIs and reducing bandwidth usage.

Beautify, minify, and validate JSON — 100% free, client-side processing

Indent:

Mode:

Validate on format

Input JSON PASTE HERE

Formatted Output RESULT

About JSON Formatter & Validator

Working with code and configuration files often means switching between formats, encoding strings, or validating syntax. JSON Formatter & Validator eliminates the need for desktop software or command-line utilities by giving you a clean, instant interface right in your browser. Paste your input, get your result — no accounts, no installations, no data leaving your machine.

How to Use

Paste your JSON Click inside the left textarea and paste or type your raw JSON data.

Choose indent style Select 2 spaces, 4 spaces, or Tab from the Indent dropdown.

Choose mode Pick Beautify to add readable indentation, or Minify to strip all whitespace for a smaller payload.

Click "Format JSON" Your JSON is instantly processed and the result appears on the right. Any syntax errors are reported below.

Copy the result Hit 📋 Copy to copy the formatted JSON to your clipboard.

🔒 Privacy note: All processing happens locally in your browser. Your JSON data is never sent to any server.

Frequently Asked Questions

JSON (JavaScript Object Notation) is a lightweight, human-readable data interchange format. It is based on a subset of JavaScript and is widely used for transmitting data between a server and web application, as an alternative to XML. JSON represents data as key-value pairs, arrays, strings, numbers, booleans, and null values.

Yes, completely safe. This tool runs entirely in your browser using JavaScript. Your JSON data is never uploaded to any server, stored anywhere, or transmitted over the network. Once you close the tab, the data is gone.

Yes. The formatter handles large JSON payloads using your browser's built-in JSON.parse and JSON.stringify methods. Files up to several megabytes are typically processed instantly. Files larger than 10 MB may take a second or two depending on your device's memory and CPU.

Beautify (also called pretty-print) adds indentation, line breaks, and spacing to make JSON easy to read for humans. Minify removes all unnecessary whitespace and newlines to produce the smallest possible JSON string, which is ideal for production APIs and reducing bandwidth usage.