JSON Formatter
Format, validate, and inspect JSON in your browser.
Find common media types by extension or type name.
Your result will appear here.
Enter your input, then run the tool.Select Run tool to use mime type reference.
Use the labeled units and valid search by extension or mime type. The Example button supplies a reproducible starting input.
Format, validate, and inspect JSON in your browser.
Inspect token headers and payloads without uploading them.
Create cryptographically random version 4 identifiers.