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Convert g4 to pgm

  1. Download and install the latest version of Filestar.

  2. Right click on one or more G4 file(s) on your desktop and select Convert with Filestar.

  3. Type convert to pgm in the search box.

  4. Press Convert.
convert g4 to pgm

What is the difference between .g4 and .pgm?

Name
Group 4 FAX
Portable Gray Map Image
Extension
.g4
.pgm
Format
Binary
Binary
Category
Fax
Raster Image
Developer
Computer Fax Systems (CFS)
Jef Poskanzer
Description
Group 4 (G4) used for black and white lossless compression to maintain high-quality images, commonly used in TIFF format compression by fax machines. A picture is seen as black dots and lines on a blank page; the fewer the dots and lines are, the lesser the file size.
A PGM file is a grayscale image file saved in the portable gray map (PGM) format and encoded with one or two bytes (8 or 16 bits) per pixel. It contains header information and a grid of numbers that represent different shades of gray from black (0) to white (up to 65,536). PGM files are typically stored in ASCII text format, but also have a binary representation.
MIME Type
image/g4fax
image/x-portable-graymap
Sample
sample.pgm
Wikipedia
.pgm on Wikipedia

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