WindowsWhat is the STM file format?
A file with the .STM extension is a file known as HTML server side include. It belongs to the Web Files category. This format is associated with Microsoft.
The reliable way to open a .STM file is with software that recognises this exact format, rather than guessing from the file name. If you are not sure what created a file, our file identifier can read its first bytes and name the real format, even when the file has been renamed.
This page lists 7 programs that open .STM files. A fully verified, hand-written description of this format is being prepared; until then, the details on this page are drawn directly from our database.
Format details
in a nutshellPrograms that open STM files
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