File extension PNM
| File type | Portable Anymap Bitmap Graphic Format |
| Developer | N/A |
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What is a PNM file?
PNM is a uncompressed file used for storing raster images. PNM image format can handle monochrome, color, and greyscale images. PNM files can store bitmaps in PBM, PGM, and PPM formats.
PNM image format is typically used for exchanging data between various image editors. PBM is a monochrome format (1 bit per pixel), PGM is greyscale (8 bits per pixel), and PPM is a RGB format that uses ASCII binary encoding (48 bits or 24 bits).
Program(s) that can open the .PNM file
Windows
Mac OS
Linux
How to open PNM files
If you cannot open the PNM file on your computer - there may be several reasons. The first and most important reason (the most common) is the lack of a suitable software that supports PNM among those that are installed on your device.
A very simple way to solve this problem is to find and download the appropriate application. The first part of the task has already been done – the software supporting the PNM file can be found in the table. Now just download and install the appropriate application.
Possible problems with the PNM format files
The inability to open and operate the PNM file does not necessarily mean that you do not have an appropriate software installed on your computer. There may be other problems that also block our ability to operate the Portable Anymap Bitmap Graphic Format file. Below is a list of possible problems.
- Corruption of a PNM file which is being opened
- Incorrect links to the PNM file in registry entries.
- Accidental deletion of the description of the PNM from the Windows registry
- Incomplete installation of an application that supports the PNM format
- The PNM file which is being opened is infected with an undesirable malware.
- The computer does not have enough hardware resources to cope with the opening of the PNM file.
- Drivers of equipment used by the computer to open a PNM file are out of date.
If you are sure that all of these reasons do not exist in your case (or have already been eliminated), the PNM file should operate with your programs without any problem. If the problem with the PNM file has not been solved, it may be due to the fact that in this case there is also another rare problem with the PNM file. In this case, the only you can do is to ask for assistance of a professional staff.
This extension
can be converted to:
How to associate the file with an installed software?
If you want to associate a file with a new program (e.g. my-file.PNM) you have two ways to do it. The first and the easiest one is to right-click on the selected PNM file. From the drop-down menu select "Choose default program", then click "Browse" and find the desired program. The whole operation must be confirmed by clicking OK. The second and more difficult to do is associate the PNM file extension to the corresponding software in the Windows Registry.
Is there one way to open unknown files?
Many files contain only simple text data. It is possible that while opening unknown files (e.g. PNM) with a simple text editor like Windows Notepad will allow us to see some of the data encoded in the file. This method allows you to preview the contents of many files, but probably not in such a structure as a program dedicated to support them.