English

View a PUB file online, free

A .PUB file is a Microsoft Publisher document. Drop it in to see what it really is, its size and contents, free.

Drop your .PUB file here

Opens your .PUB file right here.

Choose file
Up to 50 MB · 160+ text and code extensions
Instant. Opens in seconds
No sign-up. Just open it
100% free. No limits on use

What you get for a .PUB file

We don't have a dedicated viewer for this format, so we identify and inspect it instead — honestly, only what can be read from the file.

01

Drop your .PUB file

Choose it or drag it in. It's read right here in your browser.

02

We identify it

We read the magic bytes to tell what the file really is, its MIME type, and whether the name matches the contents.

03

See the details

Any metadata we can extract (dimensions, EXIF/GPS, document author and dates), a hex view, plus readable text and strings found inside.

What is a .PUB file?

Plain text that programs, servers and people write every day.

A .PUB file is a Publisher Document categorized as a layout file and developed by Microsoft. It contains data used for creating page layouts and is typically opened with Microsoft Publisher, Microsoft Office, or Office 365. Additionally, Adobe InDesign can be used to access this file type.

Programs that open .PUB files

Windows
Microsoft Publisher, LibreOffice Draw
macOS
LibreOffice Draw
Linux
LibreOffice Draw
Web
Online PUB-to-PDF converters (e.g. CloudConvert, Zamzar)
.PUB format details
Full nameMicrosoft Publisher Document
DeveloperMicrosoft
First released1991 (Microsoft Publisher 1.0); modern OLE-based .pub since the late 1990s
CategoryText & Code
MIME typeapplication/x-mspublisher
SignatureD0 CF 11 E0 A1 B1 1A E1 OLE2 / Compound File Binary signature

Related viewers

Every viewer is free to use.

Frequently asked questions

Is my .PUB file uploaded anywhere?

No. The file is read and highlighted for you.

Why do some characters look wrong (é, ł)?

That usually means the file was saved in one encoding and opened in another. We detect UTF-8, UTF-16 and the Windows-1250/1252 code pages automatically and show which one was used.

Can it handle huge log files?

Yes, up to 50 MB. Only the lines on screen are drawn, so scrolling stays smooth. Syntax colours are switched off for files over 1.5 MB to keep things fast.

How do the log level filters work?

We find levels like ERROR, WARN, INFO and DEBUG on each line. Lines without a level, such as stack traces, stay with the entry above them, so filtering to errors keeps the full trace.

Can I edit the file?

This is a viewer. To change code, download it or copy it into your editor. Converting encodings and line endings is planned.

Was this tool helpful?

Your rating helps us decide which tools to improve next.

Be the first to rate this tool.
Found a problem?