PDB to WBMP Converter

Seamless PDB to WBMP conversion in your browser

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Batch Conversion

Convert multiple PDB files to WBMP at once. Upload a batch and each file is processed independently — efficient and time-saving.

Browser-Based Tool

Everything happens in the browser. Open the page, upload PDB, get WBMP — no desktop software or extensions involved.

Cloud Processing

The heavy lifting happens on our servers. Your device does not process anything — just upload PDB and download WBMP.

How to convert PDB to WBMP

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

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

Let the file convert and you can download your wbmp 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

WBMP (Wireless Bitmap) is a monochrome (1-bit, black and white) image format defined as part of the Wireless Application Protocol (WAP) specification, developed by the WAP Forum (later consolidated into the Open Mobile Alliance) around 1998. The format was designed for the extremely constrained mobile devices of the late 1990s and early 2000s — phones with small monochrome screens, minimal processing power, and narrow bandwidth GSM data connections. WBMP uses the simplest possible encoding: a type identifier byte (always 0 for the only defined type), width and height encoded as multi-byte integers using a variable-length scheme, and the raw pixel data where each bit represents one pixel (0 for white, 1 for black) packed eight per byte. There is no compression, no metadata, and no color — the format is purely a minimal container for delivering small monochrome graphics to WAP-era mobile browsers. One advantage was extreme efficiency on constrained devices — WBMP images could be decoded with virtually zero CPU overhead and minimal memory, critical on early mobile hardware running at single-digit megahertz clock speeds. The tiny file sizes are another strength: a typical WBMP icon occupied just a few hundred bytes, practical for transfer over 9.6 kbps GSM data channels. While the WAP ecosystem has been entirely superseded by modern mobile web browsers capable of rendering full-color JPEG, PNG, and WebP images, WBMP files remain encountered in archived mobile content from that transitional era.

Developer: WAP Forum

Initial release: 1998

Frequently Asked Questions

Why convert PDB to WBMP?

WBMP offers 1-bit mobile graphics — converting from the legacy PDB format gives your content modern compatibility.

What programs open WBMP files?

Mobile browsers, GIMP, IrfanView can handle WBMP files. Free alternatives exist for every major operating system as well.

Is the conversion process secure?

All files are handled securely. PDB uploads are purged after processing, and resulting WBMP files expire within 24 hours.

What if my PDB file is corrupted?

Our system checks file integrity before converting. If the PDB file is damaged, an error message explains the problem.

Will I lose image quality converting PDB to WBMP?

Your image retains its current quality level. Converting from PDB to WBMP does not introduce additional degradation to the visual data.

Can I convert multiple PDB files to WBMP at once?

Absolutely — queue up multiple PDB files and the converter handles each one, producing WBMP outputs for all of them.

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

JPEG to WBMP

WEBP to WBMP

JPG to WBMP

PNG to WBMP

BMP to WBMP

GIF to WBMP

HTML to WBMP

PPTX to WBMP

PDF to WBMP

SVG to WBMP

DOCX to WBMP

PPT to WBMP

AVIF to WBMP

WPS to WBMP

DOC to WBMP

PPSX to WBMP

JPE to WBMP

BIN to WBMP

XLSX to WBMP

JFIF to WBMP

DXF to WBMP

PPTM to WBMP

AZW3 to WBMP

ODP to WBMP

TXT to WBMP

PPS to WBMP

EPS to WBMP

PPSM to WBMP

HEIC to WBMP

OTF to WBMP

PDB to WBMP Quality Rating

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