📂 MIME Types Lookup
Search MIME types by extension or media type and copy clean Content-Type headers.
What is a MIME Types Lookup Tool?
A MIME type lookup tool helps you map file extensions to media types used in HTTP headers. MIME stands for Multipurpose Internet Mail Extensions, and on the web it is primarily used in the Content-Type response header. Correct MIME values ensure browsers and clients interpret resources correctly, such as rendering HTML, executing JavaScript, applying CSS, playing media, or downloading binary files.
When MIME types are misconfigured, front-end and API behavior can break in subtle ways. A script may fail to execute, a font may not load due to strict type checks, or an uploaded file may be handled incorrectly by downstream services. During debugging, quickly checking the expected MIME value for an extension avoids configuration mistakes in Nginx, Apache, CDN rules, object storage metadata, and application frameworks.
This tool provides searchable extension-to-MIME mappings with practical usage notes and copy-ready header strings. You can search by extension like .json or by explicit MIME such as application/json. Results are organized by category and generated entirely in your browser for quick local reference.
How to Use This Tool
- Enter an extension or MIME string in the search field.
- Optionally filter by top-level category like text or image.
- Select a result to view details and usage notes.
- Copy the MIME value or full Content-Type header snippet.
- Apply the value in server config, API response, or upload metadata.
Key Features
- Fast lookup by extension or MIME value.
- Category filtering across common media families.
- Header templates ready for copy and paste.
- Useful notes for typical file and API contexts.
- Local client-side processing, no external calls required.
Frequently Asked Questions
What MIME should JSON use?
Use application/json. For APIs, this is the standard response type for JSON payloads.
Why do some text types include charset?
Text formats often include a charset parameter, commonly UTF-8, to specify character encoding for correct rendering.
Is extension alone enough to determine MIME?
Usually yes for common assets, but robust systems may also inspect file content or metadata for security and validation.
What happens if MIME is wrong?
Browsers may block resources, parse them incorrectly, or trigger downloads instead of rendering.