JSON formatter & validator
Paste JSON to pretty-print, validate or minify it.
Output will appear here…
How to use this JSON formatter
Paste raw or minified JSON and click Format to pretty-print it with proper indentation, or Minify to compress it for production use. Invalid JSON is flagged immediately so you can spot the error.
Online JSON Formatter, Validator & Minifier
Format, validate, prettify, and minify raw JSON data instantly. Designed for web developers, API engineers, and software QA teams troubleshooting structural syntax errors in API responses and configuration files.
Key Features of ToolCrate JSON Editor
- Pretty-Print & Tree View: Cleanly formats compact or messy JSON strings with proper tab spacing and indentation.
- Syntax Error Detection: Highlights missing quotes, unclosed brackets, trailing commas, and structural mismatches.
- JSON Minifier: Removes unnecessary white spaces and line breaks to compress JSON payload sizes.
Frequently Asked Questions (FAQs)
Can I minify formatted JSON back into a single line?
Yes, click the Minify button to compress formatted JSON structures instantly for production deployment.