JavaScript Object Notation (JSON) has become the de facto standard for data interchange on the web. It's lightweight, language-independent, and easy for both humans and machines to read.
Strict Syntax Rules
Unlike JavaScript objects, JSON syntax is extremely strict. A single missing comma or unquoted key will break the entire parser.
- All keys must be wrapped in double quotes
"". Single quotes are not allowed. - No trailing commas are allowed at the end of objects or arrays.
- Comments (
//or/* */) are strictly forbidden in standard JSON.
Format Your JSON Automatically
Paste your messy JSON into our formatter to instantly validate and beautify it.
Open JSON Formatter
Why Minification Matters
While formatted JSON is great for reading, transmitting formatted JSON over a network wastes bandwidth. Always minify your JSON before sending it as an API payload to reduce file size and improve response times.