Notes about the PDFIG 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 PDFIG file type is primarily associated with 'PDF Index Generator' by http://www.pdfcolony.com/. This is a project file saved by the PDF Index Generator, a program used to create book indexes for .PDF files; contains all generated index data, as well as the project settings for the index, such as the input filename, pages numbers to index, and words to include or exclude; saved in an XML format. PDFIG project files can be used to automatically append an index to an existing PDF file. They can also be reopened and edited to create new indexes.