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| Name | DJVU | |
| Full name | DJVU - DJVU Ebook Format | PDF - Portable Document Format |
| File extension | .djvu, .djv | |
| MIME type | image/vnd.djvu, image/x-djvu | application/pdf, application/x-pdf, application/x-bzpdf, application/x-gzpdf |
| Developed by | AT&T Labs - Research | Adobe Systems |
| Type of format | Document file formats | Document format |
| Description | DjVu is a computer file format designed primarily to store scanned documents, especially those containing a combination of text, line drawings, indexed color images, and photographs. | The Portable Document Format (PDF) is a file format used to present documents in a manner independent of application software, hardware, and operating systems. Each PDF file encapsulates a complete description of a fixed-layout flat document, including the text, fonts, graphics, and other information needed to display it. |
| Technical details | DjVu uses technologies such as image layer separation of text and background/images, progressive loading, arithmetic coding, and lossy compression for bitonal (monochrome) images. This allows for high-quality, readable images to be stored in a minimum of space, so that they can be made available on the web. | The PDF combines three technologies: A subset of the PostScript page description programming language, for generating the layout and graphics. A font-embedding/replacement system to allow fonts to travel with the documents. A structured storage system to bundle these elements and any associated content into a single file, with data compression where appropriate. |
| File conversion | DJVU conversion | PDF conversion |
| Associated programs | SumatraPDF, Evince. | Adobe Acrobat, Adobe InDesign, Adobe FrameMaker, Adobe Illustrator, Adobe Photoshop, Google Docs, LibreOffice, Microsoft Office, Foxit Reader, Ghostscript. |
| Wiki | https://en.wikipedia.org/wiki/DjVu | https://en.wikipedia.org/wiki/Portable_Document_Format |