February 15, 2026 · PubConvert Team
How to Open .pub Files Without Microsoft Publisher
You received a .pub file but don't have Publisher installed? Here are your options for opening and converting Publisher files on any platform.
If someone sends you a .pub file and you don't have Microsoft Publisher, you're not alone. Publisher is one of Microsoft's less common Office apps, and millions of people receive .pub files they can't open. Here's how to handle them.
What Is a .pub File?
A .pub file is a Microsoft Publisher document — a desktop publishing format used for creating newsletters, flyers, brochures, postcards, and other print materials. Unlike Word documents or PDFs, .pub files can only be natively opened by Microsoft Publisher.
Why Can't I Just Open It?
Microsoft Publisher uses a proprietary binary format (OLE2/CFB) that other applications don't support. Even Microsoft's own apps like Word can't open Publisher files. And Publisher is only available on Windows — there's no Mac, Linux, or mobile version.
Option 1: Convert Online with PubConvert
The fastest solution is to convert the file online. PubConvert processes your .pub file right in your browser and converts it to:
- PDF — for viewing and printing
- DOCX — for editing in Word or Google Docs
- PPTX — for presentations (highest layout fidelity)
- HTML — for viewing in any web browser
Your file never leaves your computer — all processing happens locally in your browser.
Option 2: Ask the Sender for a PDF
If the sender has Publisher installed, they can save the file as a PDF directly from Publisher via File → Save As → PDF. This is the simplest solution if you just need to view or print the document.
Option 3: Use LibreOffice (Limited Support)
LibreOffice can open some .pub files, but support is limited and many documents render incorrectly. It's worth trying for simple documents, but complex layouts with text boxes, images, and custom formatting often break.
Option 4: Microsoft Publisher Online
Microsoft 365 subscribers can sometimes view Publisher files through the web version of Office, but editing capabilities are limited.
Which Format Should I Choose?
- Just viewing or printing? → PDF
- Need to edit the text? → DOCX
- Need to preserve the exact layout and edit? → PPTX
- Want to view in a browser? → HTML
Try It Now
Upload your .pub file to PubConvert and see a preview instantly. No software to install, no account required for previewing.
Ready to convert your Publisher files?
Try PubConvert for free — no software to install.
Convert a File Now