public:99_annexes:annex-b-terms-and-definitions:f:file_extension

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public:99_annexes:annex-b-terms-and-definitions:f:file_extension [2026/09/12 17:42] – removed - external edit (Unknown date) 127.0.0.1public:99_annexes:annex-b-terms-and-definitions:f:file_extension [2026/09/12 17:43] (current) – ↷ Links adapted because of a move operation nick_dido
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 +====== File Extension ======
  
 +[[public:99_annexes:annex-b-terms-and-definitions:start|Go up to Terms and Definitions]]
 +
 +===== Discussion =====
 +
 +A **File Extension** is a suffix associated with a [[public:99_annexes:annex-b-terms-and-definitions:f:filename|Filename]] that conventionally identifies a file format, file type, or intended interpretation.
 +
 +Examples include:
 +
 +><code>
 +pdf
 +json
 +xml
 +svg
 +md
 +</code>
 +
 +For example, in:
 +
 +><code>
 +test-results.json
 +</code>
 +
 +the File Extension is:
 +
 +><code>
 +json
 +</code>
 +
 +A File Extension is conventionally associated with the interpretation of a file, but it does not establish that the contents of the file actually conform to the indicated format.
 +
 +For example, a file named:
 +
 +><code>
 +report.pdf
 +</code>
 +
 +may have the File Extension ''pdf'', but the extension alone does not establish that the contents constitute a valid PDF document.
 +
 +Some Filenames do not contain a File Extension.
 +
 +Examples include:
 +
 +><code>
 +README
 +LICENSE
 +Makefile
 +</code>
 +
 +The syntax used to separate a File Extension from the remainder of a Filename is determined by the applicable naming convention or environment.
 +
 +===== Definition =====
 +
 +//A suffix associated with a Filename that conventionally identifies a file format, file type, or intended interpretation.//
 +
 +===== Source =====
 +
 +  * DIDO Solutions
 +
 +===== Note =====
 +
 +A File Extension is optional unless required by an applicable policy, naming convention, or environment.
 +
 +A File Extension provides an indication of intended file interpretation and does not, by itself, establish conformance of the file contents to a particular file format.
 +
 +The separator used between the Filename stem and the File Extension is representation-dependent.
 +
 +===== Example =====
 +
 +For the Filename:
 +
 +><code>
 +architecture.svg
 +</code>
 +
 +the File Extension is:
 +
 +><code>
 +svg
 +</code>
 +
 +For the Filename:
 +
 +><code>
 +README
 +</code>
 +
 +no File Extension is present.
 +
 +----
 +
 +<WRAP centeralign>
 +© 2026 Dido Solutions, Inc. and Jackrabbit Consulting, Inc.
 +</WRAP>