The .PUB file extension is native to Microsoft Office Publisher and is used to create different kinds of publications like letters, flyers, brochures, etc., and contains both text and vector graphics ...

How to Open a PUB File Without Publisher. If you don't have Publisher, Microsoft's desktop publishing program, and a business associate sends you a Microsoft Publisher file, you have several ...

How to Open Publisher Files With OpenOffice. Although Apache's OpenOffice is compatible with the rest of the Microsoft Office suite, it cannot convert Microsoft Publisher files.

You can convert PUB files to PDF using the Microsoft Publisher software itself or use the free online Publisher to PDF converter tool.

Free Web service Zamzar can turn Publisher files into Word documents, PDFs, HTML pages, and loads of other formats.