DJVU is a file format with similar functions as PDF, but often able to provide smaller size for similar image quality. DJVUs are generally used for storing scanned documents containing text, tables and images, and can contain an optical character recognition layer which allows the user to copy and paste certain segments from the scanned document. For these reasons, DJVU has become a fairly popular e-book format and is supported by some document or e-book viewers.
A CAL image file represents a monochrome bitmap image that uses the CALS raster image standard for storing graphics data. This standard was created in the 1980s by the US Department of Defence as a compressed interchangeable image format. CAL and CALS are extensions used for similar purposes.
So, how to change DJVU into CAL?
The quick and simple way to handle your files is to get a quality piece of software, such as reaConverter. Although it is fast, this software is extremely efficient in managing a wide range of conversions. As you will soon realize, reaConverter will help you avoid spending countless hours trying to figure out how to convert DJVUs. But at the same time, it will allow you to apply a wide range of editing options.
Download and Install reaConverter
reaConverter is quick to download, install and launch, and you don't need to be an IT specialist in order to understand in a few minutes how it operates.
Load DJVU Files
Start reaConverter and load all the .djvu files you intend to convert into .cal because, as opposed to most free online converters, reaConverter supports batch conversion. So you can save the time and energy you would lose with doing repetitive operations.
Select DJVUs from a folder or by drag-and-dropping them directly into the reaConverter window.
Choose Output Folder
Go to the Saving options tab and decide where you want to save new .cal files. You can also spend a few more moments to apply additional editing to the images prepared for conversion.
Select CAL as Output Format
Then pick the CAL as output format. To help you do this, a series of buttons is conveniently placed at the bottom of the reaConverter window, so you can simply press on the one you need or click Plus button to add new options.
Then simply press the Start button and your conversion will begin in no time!
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Command-line interface
Advanced users can convert DJVU to CAL via command-line interface in manual or automated mode. You are welcome to contact our technical support when you have any questions about reaConverter.
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