Software Companions - PDF, DWF, PLT and TIFF Viewing and Conversion Software

CALS Viewer and Converter

View, print and convert your CALS files
Convert to PDF, PDF/A, TIFF, PNG, JPEG and more

ViewCompanion can view, print, annotate, convert CALS and other file formats.


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CALS Viewer

Using ViewCompanion you can:

  • Open CALS type I files.
  • Open CALS type II files.
  • Open PDF, TIFF, PNG, PLT, DWF, CGM and other formats.
  • Convert your files to Adobe PDF, PDF/A, TIFF, JPEG, PNG, PLT and other formats.
  • Print to all printers and plotters supported by Windows operating system.
  • Do batch convert and print.
  • Use the command line interface for conversion and printing.
  • Annotate your files using text, stamps, symbols, barcodes, polygons etc.
  • And much more

The CALS Raster file format standard was developed by the United States Department of Defense (DoD) as part of the Continuous Acquisition and Life-cycle Support (CALS) initiative. The file format can be used to store raster image data, either uncompressed or compressed using CCITT Group 4 compression.


ViewCompanion with CALS support is available as two different editions: Pro and Premium.
The Premium edition adds advanced tools like scanning, image deskew and resizing.
Please read the more about the two editions using the links below:


ViewCompanion Pro
ViewCompanion Pro
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ViewCompanion Premium
ViewCompanion Premium
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Purchase information

download free trial
Download a 30-days trial now
A fully functional evaluation copy can be downloaded from our web site. The downloaded product will run in evaluation mode for a period of 30 days. If you want to continue to use the product after this period, you're required purchase a license.