Convert DJVU to CAL
Convert DJVU images to CAL format, edit and optimize images online and free.
Drop Files Anywhere to Upload
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 DjVu files are widely used for digitizing books, magazines, and historical documents due to their ability to produce smaller file sizes compared to PDF, JPEG, and TIFF formats.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 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.
Select a DJVU image from your computer, or drag & drop it on the page.
Pick any DJVU to CAL tools if you need to edit your DJVU file, then click the Convert button.
Let the file convert, then you can download your CAL file right afterward.
To change DJVU format to CAL, 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 CAL 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.