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PDB to DJVU Converter

Turn PDB content into DJVU documents quickly online

Choose Files

Drop files here. 1 GB maximum file size or Sign Up

Multi-File Upload

Handle multiple PDB files in one go. Each is converted to DJVU independently, and all downloads are available together.

Nothing to Install

Convert PDB to DJVU directly in the browser — zero installs, zero setup. Works the moment you visit the page.

Server-Side Conversion

PDB to DJVU conversion happens in the cloud. Your computer or phone is not burdened by any processing work whatsoever.

How to convert PDB to DJVU

Select files from Computer, Google Drive, Dropbox, URL or by dragging it on the page.

Choose djvu or any other format you need as a result (more than 200 formats supported)

Let the file convert and you can download your djvu file right afterwards

About formats

PDB (Palm Database) is a generic database container format created by Palm, Inc. for the Palm OS platform, first appearing with the original PalmPilot in March 1996. In the ebook context, PDB files most commonly use the PalmDOC or Plucker encoding to store readable text with basic formatting. The format consists of a 78-byte header identifying the database name, creation date, and record count, followed by a record index table and the data records themselves. PalmDOC-encoded PDB files use a simple LZ77-based compression scheme to pack plain text efficiently, while Plucker extends this with HTML rendering, image support, and hyperlink navigation. PDB ebooks powered a thriving mobile reading ecosystem years before dedicated e-readers existed — millions of Palm OS users carried entire libraries on devices like the Palm V, Tungsten, and Treo handhelds. A primary advantage is extreme simplicity: the flat record structure and minimal overhead mean PDB files parse instantly even on severely constrained hardware with limited memory and processing power. The open, well-documented structure is another strength, having spawned numerous reader applications across Palm OS, Windows, and later mobile platforms. Though the Palm platform is long discontinued, PDB ebooks remain accessible through conversion tools and readers like Calibre, and the format holds historical significance as one of the earliest practical mobile ebook solutions.

Developer: Palm, Inc.

Initial release: March 1996

DjVu (pronounced "deja vu") is a document format developed at AT&T Labs by Yann LeCun, Leon Bottou, Patrick Haffner, and Paul Howard, first released in 1996. The format was specifically designed for storing scanned documents and images at very high compression ratios while maintaining visual quality suitable for on-screen reading. DjVu achieves this through a layered approach: the document image is separated into a foreground layer (text and line art at full resolution), a background layer (photographs and textures at reduced resolution), and a mask layer that determines which layer is visible at each pixel. This separation, combined with purpose-built compression algorithms for each layer type, typically produces files 5-10 times smaller than equivalent JPEG or PDF scans. One advantage is exceptional compression on scanned pages — a 300 DPI color scan that might occupy 25 MB as TIFF or 500 KB as JPEG typically compresses to 40-80 KB in DjVu while preserving legible text. The progressive rendering model is another strength: DjVu files stream efficiently over networks, displaying a readable low-resolution version almost immediately while progressively refining to full quality. The format supports multi-page documents, embedded text layers for searchability, hyperlinks, annotations, and a shared dictionary mechanism that further compresses collections of similar pages. DjVu is widely used by libraries and archives for digitized historical documents and manuscripts.

Developer: AT&T Labs

Initial release: 1996

Frequently Asked Questions

Why convert PDB to DJVU?

Moving PDB content to DJVU ensures scanned document compression — a practical upgrade from the discontinued Palm ecosystem.

What programs open DJVU files?

DjVuLibre, Sumatra PDF, Evince, WinDjView can handle DJVU files. Free alternatives exist for every major operating system as well.

Can I edit the resulting DJVU file?

Yes, if you open the DJVU file in a compatible editor. You can modify content, reformat, or extract elements as needed.

Is batch conversion to DJVU supported?

Batch processing is available. Queue several PDB files and the converter produces individual DJVU outputs for each.

Does this work on mobile?

It works on any device with a browser. No app needed — just upload your PDB file and get the DJVU result.

Will my content be preserved in the DJVU output?

Yes — the PDB content is placed within the DJVU file, so recipients see your data when they open the document.

Related Conversions

PDB to PDF

PDB to EPUB

PDB to MOBI

PDB to DOC

PDB to JPG

PDB to SVG

PDB to DOCX

PDB to TXT

PDB to FB2

PDB to GIF

PDB to XLS

PDB to PNG

PDB to RTF

PDB to CSV

PDB to XLSX

PDB to JPEG

PDB to DXF

PDB to PPT

PDB to PPTX

PDB to ODT

PDB to HTML

PDB to AI

PDB to PS

PDB to TIFF

PDB to PLT

PDB to AZW3

PDB to WBMP

PDB to BMP

PDB to WEBP

PDB to DDS

PDB to SNB

PDB to DOCM

PDB to PSD

PDB to JP2

PDB to LRF

PDB to PBM

PDB to RB

PDB to TCR

PDB to TGA

PDB to PCX

PDB to ICO

PDB to CUR

PDB to PGM

PDB to PPM

PDB to EXR

PDB to FAX

PDB to FTS

PDB to G3

PDB to HDR

PDB to HRZ

PDB to IPL

PDB to MAP

PDB to MNG

PDB to MTV

PDB to OTB

PDB to PAL

PDB to PALM

PDB to PAM

PDB to PCD

PDB to PCT

Specific converters

PDF to DJVU

JPG to DJVU

FB2 to DJVU

DOCX to DJVU

DOC to DJVU

EPUB to DJVU

PNG to DJVU

RTF to DJVU

JPEG to DJVU

TXT to DJVU

HTML to DJVU

AZW3 to DJVU

BMP to DJVU

MOBI to DJVU

PPTX to DJVU

TIFF to DJVU

WEBP to DJVU

GIF to DJVU

ODT to DJVU

XLSX to DJVU

PPT to DJVU

XLS to DJVU

CDR to DJVU

XPS to DJVU

SVG to DJVU

PSD to DJVU

PS to DJVU

JP2 to DJVU

WPS to DJVU

PPS to DJVU