Which MIME types are related to file extension ".xlsm"?
The .xlsm file extension is associated with 2 MIME types:
application/vnd.ms-excel.sheet.macroenabled.12, application/vnd.openxmlformats-officedocument.spreadsheetml.sheet.
A MIME type is a string that tells browsers and other tools how to handle a particular kind of file.
About .xlsm Files
XLSM files are macro‐enabled Excel spreadsheets that use the Office Open XML format.
They can store data in cells, formulas, and charts. They also include embedded Visual Basic for Applications (VBA) code to automate tasks.
The standard MIME type is application/vnd.ms-excel.sheet.macroenabled.12. Another related MIME type is application/vnd.openxmlformats-officedocument.spreadsheetml.sheet; this one is often used for macro‐free spreadsheets, as noted by FilExt.com.
- Macro Automation: Run custom scripts to simplify repetitive tasks.
- Data Analysis: Perform complex calculations and data management.
- Office Integration: Seamlessly work with other Microsoft Office applications.
- Software Support: Best opened with Microsoft Excel; LibreOffice Calc may also open them with limited macro support.
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.ms-excel.sheet.macroenabled.12, application/vnd.openxmlformats-officedocument.spreadsheetml.sheet
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.