Find MIME types, character sets, and file extensions. Search by name, extension, or type category.
| MIME Type | Extension | Category |
|---|
MIME types (media types) label the format of a file or HTTP body—for example application/json or image/png. Correct types matter for Content-Type headers, downloads, and security policies.
Looking up extensions and types avoids mismatches that cause browsers to download JSON as files or block content.
No. Validate content; extensions and MIME can be spoofed.
DevToolBox tools are designed to process data in your browser whenever possible. Read our Privacy Policy and About page for details on client-side processing and network lookups.