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Convert CAL to SR

Convert CAL images to SR format, edit and optimize images online and free.

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Continuous Acquisition and Life-cycle Support Type 1 Image (.cal)

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.

CAL Converter

Sun Raster (.sr)

The Sun Raster (SR) file extension, is a raster graphics file format developed by Sun Microsystems for use on their SunOS operating system. This format, which stores black-and-white, grayscale, and color bitmapped data, was widely used in UNIX-based systems and supported by various imaging applications. The Sun Raster format includes a header, an optional color map, and the bitmapped image data. Although it does not support transparency, it remains a simple and widely distributed bitmap format.

SR Converter More About SR

How to convert CAL to SR?

  1. Upload CAL File

    Select the CAL image you want to process by browsing your computer.

  2. Select CAL Tools

    Select tools to convert your CAL image into a SR image, then click Convert.

  3. Download Your SR

    Wait for the converter to finalize, then access your SR image.

Convert CAL to SR

Convert CAL to SR on Desktop

(macOS • Windows • Linux)

Use Vertopal CLI to process CAL image and export as SR image.

  1. Access the CLI for direct commands.
  2. Navigate to the CAL folder or specify the input file path.
  3. Paste the command, substitute CAL_INPUT_FILE with your file, and run. $ vertopal convert CAL_INPUT_FILE --to sr

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