The .ppm file extension is one of the Netpbm formats being used and defined for creating Netpbm projects. The PPM format is a bitmap image file type that has the lowest common denominator color image file format. The Portable Pixmap (.ppm) format is very easy to process, write and analyze.
Files that uses .ppm file extension usually follow a certain format in every respect, but not including the precise semantics of the sample values. These files are considered efficient for the purpose that PPM are commonly utilized as an intermediary format. They are alternatively known as PPM files, in which case you have to be totally specific, you must be able to represent the variation distinctly from the actual PPM. A PPM file consists of a sequence of one or more PPM images. There are no information, markers, or buffer before, after, or between images.
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If you have additional information about the PPM file format or software that uses files with the PPM suffix, please do get in touch - we would love hearing from you.