Convert DJVU to CALS
Convert DJVU images to CALS format, edit and optimize images online and free.
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The DjVu file extension, developed by AT&T Labs in 1996, stands for "Digital Journal Viewer". It is designed to store scanned documents and combine text, line drawings, and images with high compression efficiency. DjVu files are widely used for digitizing books, magazines, and historical documents due to their ability to produce smaller file sizes compared to PDF, JPEG, and TIFF formats. This format employs advanced technologies like image layer separation, progressive loading, and arithmetic coding, making it ideal for web distribution and archival purposes.
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.
Select a DJVU image from your computer, or drag & drop it on the page.
Use the tools available for converting DJVU to CALS and click the Convert button.
Give it a moment for the CALS conversion to complete, then download your file afterward.
To change DJVU format to CALS, upload your DJVU file to proceed to the preview page. Use any available tools if you want to edit and manipulate your DJVU file. Click on the convert button and wait for the convert to complete. Download the converted CALS file afterward.
Follow steps below if you have installed Vertopal CLI on your macOS system.
cd to DJVU file location or include path to your input file.Follow steps below if you have installed Vertopal CLI on your Windows system.
cd to DJVU file location or include path to your input file.Follow steps below if you have installed Vertopal CLI on your Linux system.
cd to DJVU file location or include path to your input file.