MIME Type to Extension Converter

Type a MIME type (like image/jpeg or application/pdf) or a file extension (like .jpg, .pdf, .png) into the search box. The tool instantly searches its database of 400+ entries and shows matching results. You can also browse by category using the category filter or look at the complete database sorted alphabetically.

The database includes 400+ carefully curated entries covering all common formats and many niche ones. It includes all major IANA-registered MIME types for images, audio, video, documents, archives, fonts, code files, 3D models, databases, e-books, and more. While it doesn't include every registered IANA type (there are thousands), it covers the formats most people encounter in practice.

Yes! You can search by file extension (with or without the dot). For example, searching for .jpg, jpg, .pdf, or pdf will all return the matching MIME type entries. The tool also searches alternative extensions, so searching for .tif will find TIFF entries even though the primary extension is .tiff.

Yes, completely private. The entire MIME type database of 400+ entries is embedded in the page and loaded when you visit. All search queries are processed locally in your browser using client-side JavaScript. No search terms or queries are ever sent to any server.

The primary extension is the most common or recommended extension for a format (e.g., jpeg for image/jpeg). Alternative extensions are less common but still used variants (e.g., jpe and jfif for JPEG images). Some formats may also have legacy extensions used by specific applications or older systems.

MIME types are assigned and maintained by the Internet Assigned Numbers Authority (IANA). New types go through a registration process that requires a published specification. However, many common formats use experimental (x-) or vendor-specific (vnd.) prefixes that aren't IANA-registered but are widely accepted as de facto standards.

application/octet-stream is the generic binary data MIME type used when the specific format is unknown. It tells the browser to download the file rather than try to display it. Specific MIME types like image/jpeg or application/pdf allow browsers to handle files appropriately - displaying images inline, opening PDFs in a viewer, etc.

MIME types are critical for web development. Web servers must send the correct Content-Type header for every file, or browsers may refuse to load resources (especially scripts and stylesheets). Modern security features like MIME sniffing protection (X-Content-Type-Options: nosniff) require correct MIME types for all served resources.

Yes, it is completely free with no hidden charges, no usage limits, and no account creation required. You can look up as many MIME types as you want, as often as you like, without any restrictions. All data is processed locally in your browser with no server requests.