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 ...

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 ...

Launch Publisher. Click the "File" tab and click "Open." Browse to the location on your computer where your Microsoft Publisher file is currently saved. Double-click the file to open it.

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

Learn how to use a Microsoft 365 setting to choose whether to open files in the online or desktop app, giving you full control for each file.