PDB to PPM Converter

Transform PDB to PPM — quick online conversion tool

Choose Files

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

Batch Conversion

Convert multiple PDB files to PPM 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 PPM — 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 PPM.

How to convert PDB to PPM

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

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

Let the file convert and you can download your ppm 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

PPM (Portable Pixmap) is the full-color member of the Netpbm image format family, created by Jef Poskanzer in 1988 as part of the Pbmplus toolkit for Unix systems. PPM stores RGB color images where each pixel contains three values (red, green, blue) ranging from 0 to a specified maximum, typically 255 for 8-bit-per-channel or 65535 for 16-bit-per-channel color. The format exists in ASCII (magic number P3), where pixel values are written as decimal numbers in row-major order, and binary (magic number P6), where values are stored as raw bytes for compact representation. Both variants begin with a plain-text header: magic number, width, height, and maximum color value. PPM completes the Netpbm trio alongside PBM (monochrome) and PGM (grayscale), serving as the universal color image intermediate in the convert-process-convert pipeline that defined Netpbm's approach to format interoperability. One advantage is absolute simplicity — PPM requires no compression libraries, container parsing, or metadata handling, making it the easiest full-color format to implement from scratch in any programming language. The format's widespread adoption in scientific computing and computer graphics education is another practical strength: PPM serves as a standard I/O format for ray tracers, image processing coursework, and visualization tools where implementation simplicity outweighs file size concerns. PPM is supported by ImageMagick, GIMP, and virtually all image processing libraries.

Developer: Jef Poskanzer

Initial release: 1988

Frequently Asked Questions

Why convert PDB to PPM?

PPM offers full-color uncompressed raster — converting from the legacy PDB format gives your content modern compatibility.

What programs open PPM files?

Open PPM with GIMP, IrfanView, Netpbm tools, image editors. On mobile devices, built-in gallery apps or third-party viewers also handle this format.

Does the converter work on mobile devices?

Yes — the PDB to PPM converter is fully browser-based and works on phones, tablets, and desktop computers equally well.

Will image dimensions change during conversion?

No — the converter keeps the same image size. Dimensions only change if you explicitly set resize options.

Is the conversion process secure?

Yes — uploaded PDB files are deleted right after conversion, and PPM results are removed within 24 hours from our servers.

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.

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

JPG to PPM

PNG to PPM

PDF to PPM

BMP to PPM

JPEG to PPM

PPTX to PPM

GIF to PPM

TXT to PPM

DOCX to PPM

WEBP to PPM

TGA to PPM

PPSX to PPM

TIFF to PPM

JFIF to PPM

PSD to PPM

ICO to PPM

PGM to PPM

XLSX to PPM

PPT to PPM

PPTM to PPM

XCF to PPM

SVG to PPM

HTML to PPM

DOC to PPM

AVIF to PPM

HEIC to PPM

AI to PPM

ARW to PPM

PBM to PPM

ORF to PPM