Hello,
Can you confirm that your VeryPDF PDF to Image Converter, can convert PDF's to a .CAL format? See below for details on .CAL format;
The CALS Raster File Format is a bitmap defined by the U.S. Department of Defense and intended for storing monochrome images.
There are two types of CALS files:
1. Type 1: Stores a single image per file and data is always compressed using CCITT Group 4.
2. Type 2: Can store multiple images per file, the image data for each image can be subdivided into tiles, and each tile can be stored uncompressed, or compressed using CCITT Group 4.
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Thanks for your message, VeryPDF PDF to Image Converter can't convert PDF file to CAL format, however, we will try to support CAL format in the future, thank you.