JSON Formatter & Validator
Format, validate, minify, and inspect JSON with a cleaner editor so debugging and sharing API payloads is faster.
This free JSON formatter helps frontend developers and API users clean messy payloads, validate syntax, and inspect structured data without switching tools.
Use it when you need to debug API responses, prettify configuration files, minify output for transport, or quickly confirm that a JSON document is valid before using it in code.
Valid parsed JSON will appear here after formatting or minifying.
JSON Formatting Tips
Short comparisons and tips to help you choose the right option faster.
Formatting vs minifying JSON
Format JSON when you need to read, debug, or review structure. Minify JSON when you want the smallest possible output for transport or compact storage.
When validation matters
Validation is useful before shipping config files, testing API payloads, or pasting data into code. A single missing comma or quote can break the whole document.
How to Use
Follow these quick steps to get the result you need.
Paste raw JSON into the input panel or load a sample payload to test the formatter.
Choose whether you want formatted or minified output, then run validation to catch syntax errors.
Copy the cleaned result or review the parsed object tree and file stats before using it elsewhere.