PNM to PGM Converter
Free online conversion from PNM file to PGM
Portable Any Map Image
Is a raster graphics file that can handle portable monochrome, grayscale, and color images.
Portable Gray Map File Format
An image format that stores greyscale images saved in the portable grey map format.
Steps to Convert PNM to PGM
Drag and drop your PNM image file(s) into the blue box or click "choose a file" to select from your computer.
Review each file to check if it is indeed the one you want to convert. If not click the trash button and select a new one.
Click the convert button. Your file(s) will begin to upload and the status of the conversion process will be shown.
Once the conversion process is complete a list of your new PGM's will appear. Click the "download" link to save the file to your device.