Which MIME types are related to file extension ".sgm"?

The .sgm file extension is associated with 3 MIME types:

A MIME type is a string that tells browsers and other tools how to handle a particular kind of file.

About .sgm Files

SGM files are files that store documents using Standard Generalized Markup Language (SGML).
They are plain-text documents marked up with tags and attributes. These files follow standards such as ISO 8879:1986.

They are commonly identified by these MIME types:

text/sgml: Indicates the content is SGML in a plain-text format.
application/sgml: Classifies the file as a full SGML document for applications.
text/xml: Sometimes used when the file encodes archival descriptions in a format similar to XML.

SGM files are used in environments where defining document structure is crucial. Key points include:

Markup Standard: SGML is the foundation for later standards like HTML and XML.
Primary Use: Structuring complex documents and archival data.
Editing Options: They can be opened and edited in plain text editors such as Notepad++ or advanced SGML tools and processors like Jade.

Based on information from FilExt.com, SGM files maintain a role in legacy systems and specialized documentation applications where rich structure and flexibility in text representation are required.

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

text/sgml, application/sgml, text/xml

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.