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CALS Converter

Convert CALS images to a variety of formats, edit and optimize images online and free.

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

The CALS (Continuous Acquisition and Life-cycle Support) Type 1 Image file format, developed by the United States Department of Defense in the mid-1980s, is a standard for storing raster (bit-mapped) image data, typically black-and-white. It ensures efficient data interchange and retention of orientation metadata. The format supports both uncompressed and compressed (using CCITT Group 4 compression) images. This standard was part of the broader CALS initiative aimed at improving electronic publishing and data management within the federal government.

How to convert CALS?

  1. Upload CALS File

    Select a CALS file directly from your device for upload.

  2. Choose Output Formats

    Choose the output format that aligns with your CALS file conversion.

  3. Convert & Download

    Once processing is finished, the file will be available for download.

CALS Converter

Convert CALS on Desktop

(macOS • Windows • Linux)

The Vertopal CLI environment is necessary to convert CALS image efficiently.

  1. Run the Terminal program to begin.
  2. Either cd into the CALS directory or specify the path.
  3. Paste the command, substitute CALS_INPUT_FILE with your file name, and execute. $ vertopal convert CALS_INPUT_FILE --to output_format

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