By now, most of us are familiar with PDF files as a way of sharing documents over the internet. PDF files can sometimes be large and take a long time to download. The DJVU (pronounced déjà vu) file format, while not as ubiquitous as PDF, provides excellent resolution of graphics/text and smaller file sizes. On one recent project, I prepared a file as a PDF and a DJVU file. The DJVU file was only about one third the size of the PDF and looked better! Why should I know about DJVU? Many archival materials that are made available over the internet use it for the reasons cited above.