Format, validate, and minify JSON with tree view and syntax highlighting.
Paste any JSON data and instantly format it with proper indentation, or minify it for production. The validator shows exact error positions with line numbers when your JSON is malformed.
JSON formatters are essential when working with API responses, configuration files, package.json, or any structured data. Minified JSON saves bandwidth in production, while formatted JSON makes debugging and code review significantly easier.
Use our JavaScript Formatter for JS code, or the Schema Generator to create valid JSON-LD structured data for SEO.