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Convert PJPEG to CAL

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

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Progressive JPEG (.pjpeg)

The PJPEG (Progressive JPEG) is a file extension for images that enhances the standard JPEG format by displaying images in successive waves of increasing detail, improving the user experience during slow network conditions. The JPEG stands for "Joint Photographic Experts Group", the organization that developed the standard in 1992. PJPEG is particularly useful for web applications, as it allows images to appear more quickly and progressively refine in quality, rather than loading from top to bottom like baseline JPEGs.

PJPEG Converter

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

How to convert PJPEG to CAL?

  1. Upload PJPEG File

    Drag & drop any PJPEG file from your device or click the Choose File button to proceed.

  2. Select PJPEG Tools

    Pick any PJPEG to CAL tools if you need to edit your PJPEG file, then click the Convert button.

  3. Download Your CAL

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

Convert PJPEG to CAL

Tools

PJPEG Rotate

Rotate PJPEG to right (90° clockwise), to left (90° counter-clockwise), 180°, and convert it to CAL.

PJPEG Flip

Flip PJPEG vertically and/or horizontally (flop), and convert it to CAL.

Frequently Asked Questions

How to change PJPEG format to CAL?

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

Convert Files on Desktop

macOS
Windows
Linux

Convert PJPEG to CAL on macOS

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

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

Convert PJPEG to CAL 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 PJPEG file location or include path to your input file.
  3. Paste and execute the command below, substituting in your PJPEG_INPUT_FILE name or path. $ vertopal convert PJPEG_INPUT_FILE --to cal

Convert PJPEG to CAL on Linux

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

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

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