Convert CAL to PGM
Convert CAL images to PGM format, edit and optimize images online and free.
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The CAL file extension, known as CALS (Continuous Acquisition and Life-cycle Support) Type 1 Image, is a 1-bit black-and-white raster image format developed by the U.S. Department of Defense in the mid-1980s to standardize graphics data interchange for military documentation. It is primarily used for storing and sharing monochrome images while retaining orientation metadata. The format supports both uncompressed and compressed (using CCITT Group 4 compression) images.
The Portable Graymap (PGM) file extension, originating in the late 1980s as part of the Netpbm project, stands for "Portable Gray Map". It serves as a simple, versatile format for grayscale images, enabling easy reading and writing by various programs. Due to its straightforward structure and plain text encoding, it's often used in academic and research settings where ease of parsing and accessibility are crucial. PGM files store grayscale images in a compact, efficient manner, making them an essential tool for image processing tasks.
Drag and drop or manually select the CAL file from your system.
Adjust CAL to PGM settings with tools, then press Convert.
Click Download after the PGM conversion ends to get your file.
The Vertopal CLI ensures reliable conversion of CAL image into PGM image formats.
cd into the CAL file directory or provide the path.