Free Online JSON Formatter and Validator Tool
JSON Formatter, Minifier & Validator
Paste your JSON below and click Format, Minify, or Validate.
🧩 JSON Formatter & Validator
The JSON Formatter & Validator is a free online tool that helps you format, beautify, and validate your JSON data instantly. Whether you’re working with API responses, configuration files, or web development data, this tool makes it easy to detect errors and improve readability.
✅ Instant Validation: Paste your JSON code and check for syntax errors on the spot.
⚙️ Auto Formatting: Clean and beautify messy or minified JSON in one click.
🔒 Secure & Fast: Runs completely in your browser — no data is uploaded or stored.
Perfect for developers, students, and data analysts who want a simple, efficient, and reliable way to format and validate JSON online.