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Convert G3 to CALS

Convert G3 images to CALS format, edit and optimize images online and free.

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CCITT Group 3 Fax Image (.g3)

The G3 file extension refers to the CCITT Group 3 Fax Image, a standardized format developed by the Consultative Committee for International Telegraphy and Telephony (CCITT), now known as ITU-T. This format was created to efficiently compress black-and-white fax documents for transmission over telephone lines. It employs a method called Modified Huffman Coding for data compression, enabling reduced transmission time and bandwidth usage. G3 was widely adopted in the 1980s and 1990s as the primary standard for fax transmissions, ensuring compatibility across different fax machines and systems.

G3 Converter More About G3

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.

CALS Converter

How to convert G3 to CALS?

  1. Upload G3 File

    Drag & drop or browse your device to select and upload your G3 file.

  2. Select G3 Tools

    To customize G3 to CALS conversion, use the available tools before clicking the Convert button.

  3. Download Your CALS

    Let the file convert, then you can download your CALS file right afterward.

Convert G3 to CALS

Frequently Asked Questions

How to change G3 format to CALS?

To change G3 format to CALS, upload your G3 file to proceed to the preview page. Use any available tools if you want to edit and manipulate your G3 file. Click on the convert button and wait for the convert to complete. Download the converted CALS file afterward.

Convert Files on Desktop

macOS
Windows
Linux

Convert G3 to CALS on macOS

Follow steps below if you have installed Vertopal CLI on your macOS system.

  1. Open macOS Terminal.
  2. Either cd to G3 file location or include path to your input file.
  3. Paste and execute the command below, substituting in your G3_INPUT_FILE name or path. $ vertopal convert G3_INPUT_FILE --to cals

Convert G3 to CALS on Windows

Follow steps below if you have installed Vertopal CLI on your Windows system.

  1. Open Command Prompt or Windows PowerShell.
  2. Either cd to G3 file location or include path to your input file.
  3. Paste and execute the command below, substituting in your G3_INPUT_FILE name or path. $ vertopal convert G3_INPUT_FILE --to cals

Convert G3 to CALS on Linux

Follow steps below if you have installed Vertopal CLI on your Linux system.

  1. Open Linux Terminal.
  2. Either cd to G3 file location or include path to your input file.
  3. Paste and execute the command below, substituting in your G3_INPUT_FILE name or path. $ vertopal convert G3_INPUT_FILE --to cals

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