MIME types
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| − | Multipurpose Internet Mail Extensions file type designators, commonly shortened to '''MIME types''', and formally called [[media type]]s to reflect that their usage has grown beyond identifying email attachments, are a handy way to refer to file formats. IANA hands them out upon request/review. | + | {{FormatInfo |
| + | |subcat=E-Mail, newsgroups, and forums | ||
| + | }} | ||
| + | '''Multipurpose Internet Mail Extensions''' file type designators, commonly shortened to '''MIME types''', and formally called [[media type]]s to reflect that their usage has grown beyond identifying email attachments, are a handy way to refer to file formats. IANA hands them out upon request/review. The identifiers were originally defined in RFC 2046 for use in email sent through [[SMTP]], but their use has expanded to other protocols such as [[HTTP]], [[Real-time Transport Protocol|RTP]] and [[Session Initiation Protocol|SIP]]. These types were called '''MIME types''', and are sometimes referred to as '''Content-types''', after the name of a header in several protocols whose value is such a type. The original name '''MIME type''' referred to usage to identify non-ASCII parts of email messages composed using the [[MIME]] (Multipurpose Internet Mail Extensions) specification. Without MIME types, email clients would not be able to understand if an attachment file were a graphics file or a spreadsheet etc. and would not be able to handle the attachment appropriately. | ||
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| + | ==Sources== | ||
| + | * [[Wikipedia:Internet media type|Wikipedia article]] | ||
| + | * RFC 2045 | ||
| + | * RFC 2046 | ||
| + | * RFC 4288 | ||
| + | * [http://www.iana.org/assignments/media-types/index.html IANA list of MIME types] | ||
| + | * [http://mimesniff.spec.whatwg.org/ WHATWG MIME-sniffing standards] | ||
[[Template:Mimetype]] | [[Template:Mimetype]] | ||
[[:Category:FormatInfo without mimetypes]] | [[:Category:FormatInfo without mimetypes]] | ||
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| + | [[Category:Web]] | ||
| + | [[Category:Naming and numbering systems]] | ||
Revision as of 00:53, 21 February 2017
Multipurpose Internet Mail Extensions file type designators, commonly shortened to MIME types, and formally called media types to reflect that their usage has grown beyond identifying email attachments, are a handy way to refer to file formats. IANA hands them out upon request/review. The identifiers were originally defined in RFC 2046 for use in email sent through SMTP, but their use has expanded to other protocols such as HTTP, RTP and SIP. These types were called MIME types, and are sometimes referred to as Content-types, after the name of a header in several protocols whose value is such a type. The original name MIME type referred to usage to identify non-ASCII parts of email messages composed using the MIME (Multipurpose Internet Mail Extensions) specification. Without MIME types, email clients would not be able to understand if an attachment file were a graphics file or a spreadsheet etc. and would not be able to handle the attachment appropriately.
