JSON Formatter & Validator

Format, validate, minify, and beautify JSON online. Instant syntax highlighting and error detection.

Free JSON Tool: Paste your JSON code to format, validate, and analyze it instantly. Get real-time error detection with line numbers, character counts, object depth analysis, and more. No installation needed—everything runs in your browser.

Characters

Lines

Object Depth

Status

—

Controls

Indentation

❌ Invalid JSON

✓ Valid JSON - Your JSON is properly formatted

📥 JSON Input

📤 Formatted Output

Frequently Asked Questions

What is JSON?

JSON (JavaScript Object Notation) is a lightweight data format used for data exchange. It's human-readable and widely supported across programming languages.

Is my data secure?

Yes! All processing happens entirely in your browser. Your data is never sent to any server and never stored anywhere.

What's the difference between Format and Minify?

Format adds indentation and line breaks for readability. Minify removes all extra whitespace to create the smallest file size.