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Convert CALS to JBG

Convert CALS images to JBG format, 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.

CALS Converter

Joint Bi-level Image Group (.jbg)

The JBG file extension stands for Joint Bi-level Image Group, a format developed for efficient lossless compression of binary images, primarily used in fax transmissions. Introduced by the Joint Bi-level Image Experts Group, JBG files store 1-bit raster images and offer superior compression compared to older standards like CCITT Group 3 and 4. Although initially popular for fax machines, the format has largely been superseded by JBIG2, which provides even better compression.

JBG Converter

How to convert CALS to JBG?

  1. Upload CALS File

    Choose any CALS image from your computer, or drag & drop a CALS file onto this page.

  2. Select CALS Tools

    For advanced customized conversion, use CALS to JBG tools and click Convert.

  3. Download Your JBG

    After the convert is complete, click on the Download button to get your JBG image.

Convert CALS to JBG

Frequently Asked Questions

How to change CALS format to JBG?

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

Convert Files on Desktop

macOS
Windows
Linux

Convert CALS to JBG on macOS

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

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

Convert CALS to JBG 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 CALS file location or include path to your input file.
  3. Paste and execute the command below, substituting in your CALS_INPUT_FILE name or path. $ vertopal convert CALS_INPUT_FILE --to jbg

Convert CALS to JBG on Linux

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

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

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