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.djvu

DjVu Scanned Document

Documents

DJVU is used for compact scanned books and documents. It may contain searchable hidden text as well as page images. A document can be bundled into one file or use an index referencing separate page files; check the complete delivery.

Main use
Compressed scanned pages and multipage documents
Data type
Binary data
All sections, questions and sources

Content reviewed： · Editor：Kai

Opening steps

Choose your environment or purpose to see its steps.

DjView / DjVuLibre-compatible viewer

Preserve the original and inspect a working copy in a compatible application.

  1. Open a document copy in DjView or another compatible viewer.
  2. Inspect first/last pages, thumbnails and the document outline.
  3. Test search/copy to distinguish text-enabled pages from image-only pages.
Inspect the received file and its requirements

Establish dependencies and settings before proceeding.

  1. Check whether the producer provides a complete set of page files.
  2. For an indirect document, preserve folder structure and reference locations.
  3. Check edition, volume and missing pages.

Menu labels and support vary by app, OS and version. Preserve the original before making changes.

Troubleshooting by symptom

  • Browser will not open it: use a DjVu-capable app rather than assuming PDF support.
  • Pages missing: check that only the index was not delivered.
  • Search fails: image-only content requires a separate OCR workflow.
  • Copied text is wrong: compare OCR output against the page image.

DJVU → PDF / page images

  1. Use viewer export/printing or DjVuLibre conversion with the required pages and resolution.
  2. After output, check page count/order, small text, illustrations and search results.

Output can be larger, and text layers, links and outlines depend on the export method.

Check text layers separately from page images

A visible page image may have a separate text layer. Readability does not imply searchability, and searchable OCR need not be accurate.

Source for these steps：DjVuLibre · DjVu document format / DjVuLibre · DjView4 manual / DjVuLibre · ddjvu manual

Worked example: checks before handoff

Example: for an old booklet exported to PDF, inspect the cover, an illustration and final page, then search a proper name to assess text-layer availability and errors.

Source for these steps：DjVuLibre · DjVu document format / DjVuLibre · DjView4 manual / DjVuLibre · ddjvu manual

Related-format differences

Related-format differences
Format / methodPurpose and preserved information
.djvuCompressed scanned pages and multipage documents
PDFSuitable for broad document delivery; check preservation of DjVu text and structure.
DJVU → PDF / page imagesOutput can be larger, and text layers, links and outlines depend on the export method.

Handling and security

Review embedded links before following them; do not force installation of obsolete browser plug-ins.

Questions and answers

What about the DJV suffix?

DJV is another suffix used for DjVu; confirm the producer and actual content.

Can I rename DJVU to PDF?

It is a different format; export using compatible software while preserving the original.

Why is readable text not searchable?

It may be stored only as a page image without a hidden text layer.

Format facts: name, steward and MIME type
Formal name
DjVu Scanned Document
Steward / specification
DjVuLibre
MIME type
image/vnd.djvu

Primary and official sources

  • Project documentationDjVu document format

    Bundled and indirect multipage document structure.

    DjVuLibre · Link checked：
  • Project documentationDjView4 manual

    Page viewing, search and printing.

    DjVuLibre · Link checked：
  • Project documentationddjvu manual

    Decoding to page images and PDF.

    DjVuLibre · Link checked：