Which MIME types are related to file extension ".key"?
The .key file extension is associated with 3 MIME types:
application/vnd.apple.keynote, application/octet-stream, text/plain.
A MIME type is a string that tells browsers and other tools how to handle a particular kind of file.
About .key Files
KEY files are primarily used as presentation documents created with Apple Keynote.
They are saved in a specialized format that holds slides, images, animations, and transition data. The associated MIME type is application/vnd.apple.keynote.
- Presentation Files: Created by Apple Keynote, these files store slides and multimedia elements for presentations. They are part of the iWork suite and can be opened using Apple Keynote or via the web-based iCloud version on a PC.
- Keyboard Map Files: In some cases, .key files use the MIME type application/octet-stream to represent Quick Pascal keyboard maps. These are binary files used for configuring keyboard inputs in certain development environments.
- Text Data Files: Other .key files may hold plain text, such as RAR registration data, and are marked with the MIME type text/plain.
Different software opens .key files based on their content. For example, Apple Keynote manages the presentation type, while basic text editors or specialized tools may open the other versions.
Based on information from FilExt.com, the primary use of .key files is for managing presentation content, even though the extension appears in other, less common contexts.
Relationship between file extension and MIME type
A file extension is a suffix at the end of a filename that indicates what type of file it is. File extensions help both users and operating systems identify what application should be used to open the file.
File extensions are typically separated from the filename by a period (dot) and consist of 2-4 characters, though they can be longer. For example, in the filename "document.pdf", ".pdf" is the file extension.
File extensions are closely related to MIME types, as they both serve to identify the format of a file. However, while MIME types are used primarily by web browsers and servers, file extensions are used by operating systems and applications.
Associated MIME types
application/vnd.apple.keynote, application/octet-stream, text/plain
FAQ
What is a MIME type?
A MIME (Multipurpose Internet Mail Extensions) type is a standard that indicates the nature and format of a document, file, or assortment of bytes. MIME types are defined and standardized in IETF's RFC 6838.
MIME types are important because they help browsers and servers understand how to process a file. When a browser receives a file from a server, it uses the MIME type to determine how to display or handle the content, whether it's an image to display, a PDF to open in a viewer, or a video to play.
MIME types consist of a type and a subtype, separated by a slash (e.g., text/html, image/jpeg, application/pdf). Some MIME types also include optional parameters.
How do I find the MIME type for a file?
You can check the file extension or use a file identification tool such as file --mime-type on the command line. Many programming languages also provide libraries to detect MIME types.
Why can one extension have multiple MIME types?
Different programs and historical usage may assign various MIME identifiers to the same file format. Listing them together helps maintain compatibility across tools.