JSON Formatter & Validator

Paste JSON → Format → Validate → Copy

Free online JSON formatter and validator to pretty-print, minify and verify JSON data instantly in your browser.

How it works:
  1. Paste your JSON data.
  2. Click Format to pretty-print and validate.
  3. Click Minify to compress JSON into one line.
  4. Copy the result instantly.
Privacy: JSON processing happens locally in your browser. No data is uploaded.
JSON Formatter FAQ

Yes — you can format and validate unlimited JSON for free.

Yes — invalid JSON will show an error message with details.

No — everything runs inside your browser only.
Related Tools:
JSON → CSV Converter · CSV Viewer · CSV ↔ Excel Converter
Online JSON Formatter & Validator Tool

JSON is widely used for APIs and data exchange. This tool helps developers and students quickly format, validate and minify JSON without installing any software. It improves readability and helps detect syntax errors instantly.

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Browser-Side AI
Private
Zero Data Storage