Convert CALS to OTB
Convert CALS images to OTB format, edit and optimize images online and free.
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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.
The OTB (Over The Air Bitmap) file extension, developed by Nokia, is used for transmitting black and white bitmap images between mobile phones, particularly Nokia and Siemens models. These images, with a maximum resolution of 255x255 pixels, are often sent via SMS in either hexadecimal text or binary format. Historically, OTB files were popular in the early days of mobile communication for sending simple graphics, icons, and wallpapers when data transmission speeds were limited.
Click Choose File and pick the CALS image required for conversion.
Select tools to convert your CALS image into a OTB image, then click Convert.
Wait for the converter to finalize, then access your OTB image.
To change CALS format to OTB, 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 OTB file afterward.
Vertopal CLI enables structured conversion from CALS image to OTB image.