DJVU vs PDF
Um comparativo detalhado de DjVu Document e PDF Document — tamanho de arquivo, qualidade, compatibilidade e qual escolher de acordo com seu fluxo de trabalho.
DjVu Document
Documents & TextDjVu is a document format designed for scanned documents with high compression.
Sobre os arquivos DJVUPDF Document
Documents & TextPDF is the universal standard for sharing documents with consistent formatting across all devices and operating systems. It preserves fonts, images, and layout exactly as intended by the author.
Sobre os arquivos PDFComparativo de vantagens
DJVU Vantagens
- Extreme compression for scanned documents — typically 5-10× smaller than PDF.
- Preserves OCR text layer alongside scanned image.
- Mature archival format at Internet Archive, Wikipedia, academic libraries.
- Separate foreground/background layers compress each content type optimally.
PDF Vantagens
- Pixel-perfect fidelity across operating systems, browsers, and printers.
- Embeds fonts, so documents render identically without the reader having them installed.
- Supports digital signatures, encryption, and redaction for legal workflows.
- ISO-standardized (ISO 32000) with multiple validated subsets (PDF/A, PDF/X, PDF/UA).
- Supports both vector and raster content, keeping line art crisp at any zoom level.
Limitações
DJVU Limitações
- No native browser support since the NPAPI era (~2015).
- Tooling outside Linux is sparse.
- Encoding requires the proprietary LizardTech/Caminova toolchain or djvulibre.
- PDF/JBIG2 now covers most of DjVu's use cases with wider compatibility.
PDF Limitações
- Editing is difficult — the format is optimized for display, not mutation.
- Text extraction can scramble reading order in multi-column layouts.
- File sizes balloon quickly when embedding high-resolution images or fonts.
- Accessibility (screen readers) requires careful tagging that many PDFs skip.
- JavaScript support has historically been a malware vector.
Especificações técnicas
| Especificação | DJVU | |
|---|---|---|
| MIME type | image/vnd.djvu | application/pdf |
| Extensions | .djvu, .djv | — |
| Compression | Wavelet (IW44) + JB2 for line art | Flate, LZW, JBIG2, JPEG, JPEG 2000 |
| Invented at | AT&T Labs (1996) | — |
| Reference tool | djvulibre (open source) | — |
| Current version | — | PDF 2.0 (ISO 32000-2:2020) |
| Max file size | — | ~10 GB (practical); 2^31 bytes (theoretical per object) |
| Color models | — | RGB, CMYK, Grayscale, Lab, DeviceN, ICC-based |
| Standard subsets | — | PDF/A, PDF/X, PDF/UA, PDF/E, PDF/VT |
Tamanhos típicos de arquivo
DJVU
- Scanned page (B&W, text-only) 10-30 KB
- Scanned page (color, illustrations) 40-150 KB
- 300-page scanned book 5-30 MB
- 1-page text-only memo 50–150 KB
- 10-page report with images 500 KB – 2 MB
- Scanned document (per page) 100 KB – 1 MB
- Full-color magazine (48 pages) 10–40 MB
Pronto para converter?
Converta entre DJVU e PDF online, grátis e sem instalar nada. Upload criptografado, exclusão automática em 60 minutos.
Perguntas frequentes
DJVU (DjVu Document) is a document format used to store paginated text, with optional formatting, tables, images, hyperlinks, headers and footers. It sits in the documents & text family and is typically associated with a specific office suite or publishing pipeline that defined the format and ships the canonical reader.
DJVU (DjVu Document) is a document formato used to store paginated text, com optional formatoting, tables, images, hyperlinks, headers e footers. It sits no documents & text family e is tipicamente associated com a specific office suite ou publishing pipeline that defined the formato e ships the canonical reader.
Modern office suites — Microsoft Word, Google Docs, LibreOffice Writer, Apple Pages — open most DJVU files with reasonable fidelity. If your installed software does not support DJVU, convert to DOCX or PDF first using KaijuConverter; both open in virtually every reader, including free online viewers.
Modern office suites — Microsoft Word, Google Docs, LibreOffice Writer, Apple Pages — abrir most DJVU arquivos com reasonable fidelity. If your installed software does not support DJVU, converter to DOCX ou PDF first usando KaijuConverter; both abrir in virtually every reader, including grátis online viewers.
Upload the DJVU to KaijuConverter and pick DOCX, PDF, ODT, RTF, HTML, Markdown, or plain text. Our pipeline runs LibreOffice headlessly plus pandoc for text formats — the same engines behind professional document pipelines. Styles, tables, images, and hyperlinks survive the conversion intact.
Yes, to a high degree. Standard fonts, headings, lists, tables, images, hyperlinks and page structure transfer cleanly. Custom fonts substitute to the closest match if not embedded; obscure layout features unique to DJVU (frames, legacy macros) may flatten to static content in the target format.