>> PNM file

PNM file format description

Many people share .pnm files without attaching instructions on how to use it. Yet it isn’t evident for everyone which program a .pnm file can be edited, converted or printed with. On this page, we try to provide assistance for handling .pnm files.

2 filename extension(s) found in our database.

.pnm - Portable Anymap Image

The PNM graphic files are related to XnView. The PNM file is a Portable Anymap Image. PNM (Portable Anymap) is not a file format itself; it is a common name for any of the other three members of the family (PGM, PPM, PBM).

Graphic files
- / -
Portable Anymap Image related extensions:
ZX Spectrum Hobetta Image
Pocket PC Bitmap Image
Amapi Image
Sony Mavica Picture
GoDot Image
TI-73 Bitmap

.pnm - Pegasus Mail IMAP Folder Cache

The PNM data files are related to Pegasus Mail. The PNM file is a Pegasus Mail IMAP Folder Cache. Pegasus Mail is a previously freeware, proprietary, email client that is developed and maintained by David Harris.

Pegasus Mail
Data files
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Pegasus Mail IMAP Folder Cache related extensions:
Great Budget Fringe Definition Data
Animation Master Turbulence Plug-in Data
Pegasus Mail Link Folder Data
Miles Sound System Flat Data
Pegasus Mail Copy to Self Filter Rules Data
MIMEsweeper Expression List Data

Naturally, other applications may also use the .pnm file extension. Even harmful programs can create .pnm files. Be especially cautious with .pnm files coming from an unknown source!

Can't open a .pnm file?

When you double-click a file to open it, Windows examines the filename extension. If Windows recognizes the filename extension, it opens the file in the program that is associated with that filename extension. When Windows does not recognize a filename extension, you receive the following message:

Windows can't open this file:


To open this file, Windows needs to know what program you want to use to open it. Windows can go online to look it up automatically, or you can manually select one from a list of programs that are installed on your computer.

To avoid this error, you need to set the file association correctly.

The .pnm file extension is often given incorrectly!

According to the searches on our site, these misspellings were the most common in the past year:

lnm, nm, npm, onm, pbm, pgm, phm, pjm, pm, pmm, pmn, pn, pnh, pnj, pnk

Is it possible that the filename extension is misspelled?

Similar file extensions in our database:

Pegasus Mail Folder Data
Portable Bitmap Image
Powernoodle File
Perl Module
PM Bitmap Image
MikuMikuDance Polygon Movie Maker Project

Operating systems currently supports the following operating systems:

Windows XP/Vista, Windows 7/8, Windows 10, CentOS, Debian GNU/Linux, Ubuntu Linux, FreeBSD, Mac OS X, iOS, Android

If you find the information on this page useful, please feel free to link to this page.

If you have useful information about the .pnm file format, then write to us!