DJVU → PDF
Convert DJVU to PDF – server-side
Why DJVU → PDF?
Convert DJVU documents to PDF – universally readable, deleted immediately.
Frequently Asked Questions
What is DJVU?
DJVU is a compressed document format, often used for scanned books and documents.
Are my files safe?
Yes. Files are processed and deleted immediately.
About PDF
PDF (Portable Document Format) was developed by Adobe Systems in 1993 and standardized as ISO 32000 in 2008 after Adobe submitted the format for standardization. PDF is the world's leading format for cross-platform document exchange, preserving layout, fonts, images, and interactive elements exactly – regardless of the display device or operating system. The format is based on a mixture of text, vector graphics, and raster images and supports forms, digital signatures, annotation features, and JavaScript actions. PDF/A, a subset for long-term archiving, is the mandatory format for documents subject to retention requirements in government agencies and enterprises. The file structure enables incremental saving, where changes are appended without rewriting the entire file. PDF 2.0 (ISO 32000-2, 2020) brought improvements in accessibility and security. Criticisms include large file sizes when embedding fonts and images, as well as the difficulty of reliably extracting PDF content – which is why OCR-based conversion tools like wandlio are needed to transform scanned PDFs into editable formats.
About DjVu
DjVu was developed by AT&T Labs in 1998 and is specialized for compressing scanned documents with text and images on separate layers. By separating text, image, and background layers, DjVu achieves significantly smaller files than PDF for scanned content - typically 5 to 10 times smaller with comparable readability and quality. The format is particularly popular in libraries and archives for digitized books and historical documents, including the Internet Archive and numerous national libraries worldwide. DjVu supports OCR text layers that are overlaid as searchable text on the scanned image, as well as multipage documents, hyperlinks, and table of contents. In the mainstream, DjVu has little support - browsers and standard PDF viewers cannot read it. Converting to PDF is the standard approach to make DjVu files accessible and openable with standard software on any platform. DjVu also supports lossy compression for photographs but was primarily optimized for document scans.
Why convert DJVU → PDF?
DjVu is a specialized document format for scanned materials with very efficient compression — typically 5-10x smaller than equivalent PDF. Despite technical advantages, DjVu has extremely limited software support: no browser displays DjVu natively, few PDF readers can open it, and most e-book platforms don't support it. Converting to PDF (PDF) makes scanned documents universally readable on all devices, in all PDF readers, and on all document platforms. PDF is the standard for immutable documents — layout-stable, viewable on any device, ideal for contracts, invoices, and archiving.