Unknown file extension can be a source of various problems. However, identifying the causes of problems with PGM files and addressing them isn’t necessary a complicated process. This article will describe 5 simple steps that will let you address problems with PGM files.
The Portable Gray Map (PGM) file format is a lossless, 8-bit, Black and White image file type. This means that it stores image information without compressing it, resulting in a high-quality picture. As its name suggests, PGM files are most suitable for grayscale images, although they can also be used to represent color.
PGM files use the raw image data format that keeps all pixel values unmodified, making them an ideal choice for technical applications. Moreover, the file type utilizes a simple ASCII plain text header for storage of meta data such as the image’s width and height values, making it easy to open and edit in supported applications.
Typically in order to open .PGM files it is sufficient to follow these simple steps: find, download, and install appropriate software. Then, by double-clicking on the file icon, open the file. System should automatically associate PGM file with appropriate software. Below is the list of programs required to open files with PGM extension:
If given file with PGM extension is not infected, it is possible that the antivirus software is blocking access to the file. User should take necessary precautions and follow the steps suggested by the system. After recovering or removing the infected file it is recommended to scan the entire system for viruses. Yo will have to acquire a new, clean version of PGM file.
Be advised that you can always consult an IT expert for help. Some problems with PGM files can be hard to solve for less sophisticated users. Also, you can ask for help one of the developers of software that supports files with PGM extension. In order to do so, go to software’s subpage and search for software’s developer website address
If the PGM file has not been downloaded properly it is not possible for the software to open such file. Check the file size in the location from where you downloaded the file in question. If the size of the original file differs from the size of downloaded PGM file, you will have to download the file again.
If the system registry has no entry related to default program that should be used to open PGM files, even though given program is installed on the system, then PGM files must be associated with the application in question.
Associating files with applications is performed similarly regardless of the type of system and consists in selecting an application which should be used for opening given type of files. In order to associate PGM files with given application, right-click the file icon and select form the context menu "Open with" option, which will display a list of suggested programs. Select your program from the list. If the application is not on the list, use the "Browse" button and point to the location of the application. Checking "Always use selected application to open this kind of files" option will set selected application as the default application for opening given files.
It is possible that the storage medium on which the file is located is damaged or corrupted. Try scanning the storage medium for errors.