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Data Transform / Format & Validate

Format & Validate

Pretty-print, minify, and validate JSON with real-time error detection and syntax highlighting.

Input
|
Output

Format, validate, or minify JSON

Parse Error

Tips

Ctrl+Enter — Format instantly

Tab key — Inserts 2-space indent

Real-time — Validates as you type

Syntax colors — Output is highlighted

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About Format & Validate

RAW's JSON Formatter & Validator lets you pretty-print, minify, and validate JSON data instantly in your browser. Paste messy API responses, config files, or any JSON and get perfectly formatted output with syntax highlighting and real-time error detection. No data is sent to any server — everything runs locally.

How to use

  1. 1Paste or type your JSON into the input editor.
  2. 2Click "Format" to pretty-print or "Minify" to compress.
  3. 3Validation errors appear in real-time with line numbers.
  4. 4Copy the formatted result to your clipboard with one click.

Frequently Asked Questions

Is my JSON data safe?
Yes. All formatting and validation happens entirely in your browser. Your data never leaves your device — there are no server calls, no logging, and no tracking.
What size JSON can this handle?
RAW can handle JSON files up to several megabytes. Since processing runs in your browser, performance depends on your device, but most JSON payloads from APIs and config files are processed instantly.
Can I validate JSON without formatting it?
Yes. The validator runs automatically as you type and highlights syntax errors with line numbers and descriptive error messages, even before you click Format.
What's the difference between Format and Minify?
Format (pretty-print) adds indentation and line breaks to make JSON human-readable. Minify removes all whitespace to produce the smallest possible output, ideal for API requests and storage.