Convert Publisher documents (PUB) online for free
The converter easily converts your PUB documents to various formats - free and online. No Microsoft Publisher or or other Page Layout software needed.
To convert other file formats to the "Desktop Publishing Document" file type, you need software like Microsoft Publisher or a similar tool.
The .PUB file extension primarily represents a document created by Microsoft Publisher, a desktop publishing application. These files use the Microsoft Compound File Binary format to store page layouts, typography formatting, raster images, and vector graphics. A secondary, critical use of the .PUB extension is for public cryptographic key files, most commonly generated by OpenSSH or PuTTY for secure server authentication.
The biggest drawback of Microsoft Publisher .PUB documents is their closed, proprietary nature. Unless the recipient holds a paid Microsoft 365 subscription and uses a Windows PC, they cannot open the file natively. Mac users, mobile devices, and web browsers are completely locked out. Additionally, Microsoft is officially deprecating Publisher in 2026, meaning relying on .PUB for long-term document storage is no longer viable.
To bypass these severe accessibility limits, file conversion is mandatory. For sharing, printing, or long-term archiving, convert .PUB to PDF to permanently lock the layout and embed fonts. If you need to extract the text for editing in another word processor, convert to DOCX. For embedding page previews on the web, convert to JPG or PNG.
Drag and drop your file here to analyze and convert it - free, online, and without installing software.
Use Convert.Guru to open and convert your PUB file.
Users also converted PUP, SSH, PUD, PDF, PEM, BIN, ADBKEY, PPK, PUBLICATION, PK, BUP, POB and MPD files.
If you want to convert PUB file to JPG, PPK, PEM, INDD, QXP, PMD, PM6, PM7 or PM8, you can use Microsoft Publisher or similar software from the "Desktop Publishing Layout" category. In the File menu, look for Save As… or Export….
To convert MDI, PDP, PM4, P65, COMIC, WEBTEMPLATE, PMD, SPUB, INDD, PM5, QXP or OMP files to PUB, try Microsoft Publisher or another comparable tool in the "Desktop Publishing Layout" category.
The history of Convert.Guru began over 25 years ago in California with Tom Simondi’s file-format database. A former contributor to Space Shuttle development and a software pioneer of the 1980s, Simondi established a trusted resource for file type analysis that was even referenced by Microsoft Windows XP. Today, we use modern technology to process and convert thousands of file formats while continually improving our PUB converter.