Format and Prettify JSON Online
Format and prettify JSON data online free to make minified API payloads readable. If you receive cramped, hard-to-read JSON strings, our formatting tool structures them with clean indentation, color coding, and syntax checks, highlighting schema errors.
How it works:
1. Paste your raw, minified, or messy JSON into the editor.
2. Choose your spacing options (e.g. 2 spaces or 4 spaces tabs).
3. Click Format JSON to validate and prettify the output instantly.
Key Features:
- Prettify JSON syntax with collapsible nodes.
- Syntax validator highlighting missing quotes or commas.
- Complete privacy as code processes inside your browser.
- Free dev utilities with no hidden premium keys.
- Handles JSON payloads of any size.
Frequently Asked Questions:
Is JSON Formatter free?
Yes. Validate and format code at zero cost.
What if my JSON has errors?
The tool's validator flags the exact line and character count where the syntax is broken.
Are my scripts secure?
Yes. Data never leaves your machine; formatting runs in-memory.
Related tools:
Encode text strings using Base64 Encoder or URL Encoder.