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Convert CAL to PNM

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

Convert CAL to PNM
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Tags:

netpbm raster

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

Portable Anymap (.pnm)

The PNM (Portable Anymap) file extension, developed by Jef Poskanzer in the 1980s, stands for Portable Any Map. It is an uncompressed raster graphics format designed for portable image storage and exchange, encompassing three sub-formats: PBM (Portable Bitmap), PGM (Portable Graymap), and PPM (Portable Pixmap). PNM files store image data in plain text or binary format, ensuring easy usage across different platforms and applications. This format is widely supported by various image editing software and is valued for its simplicity and lossless compression.

PNM Converter More About PNM

How to convert CAL to PNM?

  1. Upload CAL File

    Click the Choose File button to select the CAL file.

  2. Select CAL Tools

    Check the file preview quickly and use CAL to PNM tools if you need to change the conversion settings.

  3. Download Your PNM

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

Convert CAL to PNM

Frequently Asked Questions

How to change CAL format to PNM?

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

Convert Files on Desktop

macOS
Windows
Linux

Convert CAL to PNM on macOS

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

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

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

Convert CAL to PNM on Linux

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

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

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