What Is the File Extension .PPM?
Raster images are digital graphics or images that consist of tiny dots of color known as pixels. There are a variety of file extension associated with raster images, including .ppm files.
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Identification
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A file with the .ppm file extension is known as a portable pixmap image file. Ppm files contain a raster image.
Sources
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A number of programs create .ppm files, including Netpbm, Adobe Photoshop with CartaPGM plugin, Corel Paint Shop Pro and ACDSee Photo Manager.
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Features
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Ppm files can be opened in Text Editor and viewed as words rather than just an image. In Text Editor, each pixel or dot is given a number from 0 to 65536, which defines the precise color of that one pixel.
Features
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Ppm files also contain information about the height and width of the image as well as how much of a border or margin appears around its edges.
Considerations
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The encoding of .ppm files is not compressed to take up less memory, making the files too large to be used for sizable or very detailed images. It is also difficult to email a .ppm file because of its required memory size.
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