Notes about the APG file extension:
To open this file type, a required software must be installed. Without it you only see a Windows message "The following file cannot be opened
" (Windows 7) or "How do you want to open this file?
" (Windows 10) if you double-click the file. There click on "More apps"
and choose a suitable software to view such files on your PC or from email attachments.
The APG file type is primarily associated with 'Active Page Generator' by Webgecko Software. An APG script is a text file, consisting of content blocks and script blocks. Active Page Generator executes APG scripts. APGen (short for Active Page Generator) is a script programming environment for pre-rendering Web pages and for generating other content.