JSON Formatter & Validator

Beautify, minify, and validate your JSON data. Processed locally in your browser for privacy.

Why use this JSON Formatter?

JSON (JavaScript Object Notation) is the standard data format for web APIs. However, minified JSON is hard to read. This tool allows you to instantly beautify messy JSON, validate syntax errors, and minify it for production use.

  • Privacy Focused: Data never leaves your browser.
  • Validation: Instantly spots syntax errors.
  • Fast: Handles large files efficiently.

JSON Best Practices & Debugging Guide

JSON (JavaScript Object Notation) has eaten the world. It is the de-facto standard for data exchange on the web, replacing the verbose XML of the past.

Frequently Asked Questions

Privacy Dashboard

Processing ModeOffline Ready
Client-Side (WASM)

Calculations happen locally. No data sent to servers.

Network Requests
DESTINATION
STATUS
AnalyticsAllowed
AdSenseAllowed
File UploadsNone

Incognito Mode

JSON Formatter & Validator - Beautify JSON Online | UnitMaster | UnitMaster Dev Tools