DJVU vs PDF
Ein detaillierter Vergleich von DjVu Document und PDF Document — Dateigröße, Qualität, Kompatibilität und welches je nach Workflow zu wählen ist.
DjVu Document
Documents & TextDjVu is a document format designed for scanned documents with high compression.
Über DJVU-DateienPDF 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.
Über PDF-DateienVorteilsvergleich
DJVU Vorteile
- 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 Vorteile
- 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.
Einschränkungen
DJVU Einschränkungen
- 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 Einschränkungen
- 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.
Technische Spezifikationen
| Spezifikation | 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 |
Typische Dateigrößen
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
Bereit zum Umwandeln?
Wandle zwischen DJVU und PDF online um, kostenlos und ohne Installation. Verschlüsselter Upload, automatische Löschung in 60 Minuten.
Häufig gestellte Fragen
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.