Free Online PNM to PGX Converter
PNM
to
PGX
PNM
Portable anymap
A bitmap image in the Portable Any Map format that was originally developed for processing and storing several types of monochrome and color images without compression as well as grayscale images. Bitmap graphics data in a PNM file are stored using ASCII or binary structure.
PGX
JPEG-2000 VM Format
This is an image file format that is stored without the use of compression algorithms. It is used in the JPEG 2000 standard. This format is capable of storing only one single component, so it is limited to displaying grayscale tones. If you combine multiple PGX files, then you can make a color image.
How To Convert PNM to PGX

Step 1: Upload Files
Click the upload button or drag and drop your PNM files into the upload area.

Step 2: Convert File
Click "Convert" and wait for conversion done

Step 3: Download
Download the converted PGX file