What file formats can be exported?
From the browser plug-in, DjVu can export files in either DjVu format or BMP (bitmap) format. The following formats can be exported from Enterprise Edition: bmp, tiff, tif, jpeg, ps, pict, ppm, pgm) DjVu Editor can export to bmp, jpg, jpeg, tif,tiff, pgm, pbm, ppm, pnm, pict formats.

What is the difference between DjVu and MrSID?
LizardTech's MrSID is the ideal technology for encoding high-resolution, dense photographs. DjVu is engineered for best performance with documents - whether they be color, black and white, mixed content or graphics.

Can DjVu be used to encode original digital files?
Yes. Document Express Desktop Edition includes the LizardTech Virtual Printer. With this tool users can encode virtually any Windows-based application document into DjVu format.

Is it lossy encoding?
Yes. The algorithms that drive the DjVu technology need to slightly alter original files to enable the dramatic improvements in viewing speed and performance. However, at normal resolution sizes, DjVu documents appear lossless when viewing. While the encoder for bitonal areas can encode losslessly, the background layer is a lossy compression resulting in overall lossy encoding.

Do I need a special server to host DjVu files?
No. DjVu files can be easily put onto your Web site or embedded in HTML documents. However, leveraging LizardTech's Express Server will provide advanced functionality and improved performance. For more information please see www.lizardtech.com/solutions/expressserver

Can I print a DjVu file?
Yes. Printing DjVu files is as easy as clicking on the "print" icon on the browser plug-in toolbar. DjVu files print crisp, clear documents for easy reading.

Can I import a DjVu file into MS Office?
With the DjVu Active X Control for MS Office, DjVu files can be embedded into most MS Office documents.

Can I encode images as well as text?
Yes. Document Express is optimal for mixed content, meaning images and text. If a user wishes to encode strictly photographs, LizardTech recommends our MrSID product line.

Does DjVu support annotations such as hyperlinks?
Yes. Highlighted areas and hyperlinks can be easily added to DjVu documents using Document Express Desktop Edition (DjVu Editor). Additionally, the PDF to DjVu command line encoder, an optional add-on module to the Enterprise Edition, captures embedded hyperlinks in PDF documents.

COMPETITIVE ADVANTAGES:
What advantages does DjVu offer over current formats? DjVu offers superior image quality and enhanced viewing flexibility.

How is DjVu superior to GIF, JPEG, or TIF?
For color pages at 300 dpi containing text and pictures, DjVu files are between 10 and 30 times smaller than GIF or JPEG with similar quality levels, and between 500 and 1000 times smaller than TIF. Additionally, DjVu was specifically engineered for access speed, so not only are files considerably smaller, they can be viewed much more quickly over any network, including narrowband and wireless.

How does DjVu compare to PDF?
PDF is primarily designed for documents that require a high degree of manipulation and quality printing, while DjVu is designed for documents that require broad distribution. LizardTech's newer technology was engineered to meet the needs of companies and individuals that distribute large quantities of documents, or complex content, to a broad, geographically diverse audience.
In addition to DjVu's size advantage, ranging from 5 to 50 times smaller than corresponding PDFs based on content, the user experience is also considerably enhanced through rapid loading, viewing, and easy interaction with the DjVu document.

What other advantages does DjVu offer?
DjVu files can be panned, enlarged or reduced smoothly in real-time. These features are made possible by intelligent caching; when a document is opened the first page automatically appears, while succeeding pages are loaded as memory allows. If a user selects a later page in the document, the same process is repeated, with that page appearing instantly, and subsequent pages loading as memory allows. This treatment was designed to enhance the user experience, allowing maximal flexibility to load the document, pan or enlarge at the same time. However, in most cases these processes will be invisible to the user. When a document is opened, the first page will appear instantly, while the rest of the document will load almost as quickly.

How does DjVu work with electronic files? (i.e. Word documents)
DjVu was originally designed for scanning applications only. With the new LizardTech Virtual Printer, a component within Document Express Desktop Edition, and the PDF to DjVu Command Line Converter, users can now encode virtually any electronic document from within a Windows based application.

SCANNING

What type of scanner do I need?
Document Express Desktop Edition and Professional Edition accept scans directly from any TWAIN compliant scanner. They also accept electronic files (TIFFs, BMPs, etc.) scanned from other sources such as ISIS scanners.
DjVu Enterprise does not accept scans directly. Users can employ any standard scanning application, and then bring the files into DjVu Enterprise for fast, automated encoding.

Does DjVu have batch processing capability?
DjVu Enterprise offers batch and scriptable processing.

What are the size limitations on input files?
Current file sizes are limited to 32,000 x 32,000 pixels (approximately 100 inches x 100 inches scanned at 300 dpi.

WORKING WITH DjVu FILES

Can you rotate images?
Yes. Rotation can be done in virtually all encoders and viewers.

Will users be able to crop out areas of file?
Cropping is not available. A user will have to do this step prior to converting to DjVu.

Can I edit a DjVu document?
Yes. Documents can be edited using DjVu Editor, a component of Document Express Desktop Edition.

Can you embed a DjVu file in an HTML page?
Yes. The user needs to have the DjVu Web Browser Plug-in to accomplish this. The instructions for doing this are found in the Plug-in Help File.