MIME Types & File Extensions Directory

Lookup standard HTTP Content-Type headers, IANA media formats, and matching file extensions.

📑 IANA Standards Database
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Drop any file or click to detect its MIME type
Instant local inspection without server upload
Category:
Extension MIME Type (Content-Type) Description Action

Frequently Asked Questions

What is the correct MIME type for JSON?

The official standard MIME type for JSON files and API payloads is application/json (defined in RFC 8259).

What happens if a web server returns an incorrect Content-Type?

Browsers may fail to render styles (CSS), refuse to execute JavaScript files due to CORS/strict MIME checking, or attempt to force a file download instead of displaying images.

Frequently asked questions

What does MIME Types Directory do?

Searchable MIME types and file extensions directory. Find HTTP Content-Type headers for web development, API responses, image formats, and fonts.

How do I use MIME Types Directory?

Open MIME Types Directory, enter or select the input requested by the tool, and use its controls to see the result.

Where can I find tools related to MIME Types Directory?

Use the related tools below to explore more Developer & Code tools.

About the author

WebToolsHub Editorial Team

We maintain this developer & code tool and its usage guide.