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What are SGML files and how to open them

Are you having problems opening a SGML file or are you simply curious about its contents? We're here to explain the properties of these files and provide you with software that can open or handle your SGML files.

What is a SGML file?

A .SGML file is a Standard Generalized Markup Language file.

SGM is an acronym for Standard Generalized Markup Language. Files that are saved with the .sgml file extension are written in the SGML syntax. It is a standardized format used to define features of markup-languages like HTML and XML. You can say it is a format used to define the rules that must be followed to make, e.g., an HTML document valid.

SGML files can also be saved with the .sgm file extension, although the .sgm extension is the more popular form of the file suffix.

How to open SGML files

Important: Different programs may use files with the SGML file extension for different purposes, so unless you are sure which format your SGML file is, you may need to try a few different programs.

While we have not verified the apps ourselves yet, our users have suggested four different SGML openers which you will find listed below.

Last updated: March 24, 2022

Various apps that use files with this extension

These apps are known to open certain types of SGML files. Remember, different programs may use SGML files for different purposes, so you may need to try out a few of them to be able to open your specific file.

FrameMakerFrameMakerUser submitted
PanaView3.1PanaView3.1User submitted
PanaView3.0PanaView3.0User submitted
PanaView2.0PanaView2.0User submitted

Help us help others

File.org helps thousands of users every day, and we would love to hear from you if you have additional information about SGML file formats, example files, or compatible programs. Please use the links below or email us at submit@file.org to discuss further.