PPM to PDB Converter

Transform PPM to PDB — quick online conversion tool

Choose Files

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

Nothing to Install

The PPM to PDB converter runs in your web browser. No plugins, extensions, or desktop applications needed — just open and use.

Multi-File Upload

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

Data Protection Built In

Your PPM files are erased as soon as conversion finishes. PDB outputs are automatically removed within 24 hours.

How to convert PPM to PDB

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

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

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

About formats

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

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

Frequently Asked Questions

Why convert PPM to PDB?

PDB supports legacy Palm device graphics, solving compatibility issues that PPM files often face outside Unix environments.

What programs open PDB files?

You can open PDB files with Palm OS emulators, ImageMagick, Calibre. Most platforms have at least one built-in or free option available.

Does the converter work on mobile devices?

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

Will image dimensions change during conversion?

The original resolution is preserved. Your PDB output has the same width and height as the source PPM file.

Is the conversion process secure?

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

What if my PPM file is corrupted?

Corrupted files are detected during upload. If your PPM file has structural issues, the converter will alert you immediately.

Related Conversions

PPM to JPG

PPM to PNG

PPM to JPEG

PPM to PDF

PPM to BMP

PPM to EPS

PPM to SVG

PPM to PGM

PPM to GIF

PPM to DOC

PPM to DXF

PPM to TIFF

PPM to DOCX

PPM to RGB

PPM to PS

PPM to PBM

PPM to AI

PPM to ICO

PPM to DDS

PPM to YUV

PPM to EXR

PPM to PNM

PPM to PSD

PPM to RGBA

PPM to PAM

PPM to XPM

PPM to DOTX

PPM to TGA

PPM to EMF

PPM to EPUB

PPM to PAL

PPM to JP2

PPM to WBMP

PPM to PCX

PPM to CUR

PPM to WEBP

PPM to FAX

PPM to FTS

PPM to G3

PPM to HDR

PPM to HRZ

PPM to IPL

PPM to MAP

PPM to MNG

PPM to MTV

PPM to OTB

PPM to PALM

PPM to PCD

PPM to PCT

PPM to PDB

PPM to PFM

PPM to PICON

PPM to PICT

PPM to RAS

PPM to RGBO

PPM to SGI

PPM to SUN

PPM to UYVY

PPM to VIFF

PPM to XBM

Specific converters

PDF to PDB

FB2 to PDB

EPUB to PDB

DOCX to PDB

DOC to PDB

JPG to PDB

BIN to PDB

TXT to PDB

MOBI to PDB

PPTX to PDB

RTF to PDB

XLSX to PDB

DJVU to PDB

ODT to PDB

PNG to PDB

JPEG to PDB

HTML to PDB

XLS to PDB

HEIC to PDB

AZW3 to PDB

CSV to PDB

PPT to PDB

JFIF to PDB

BMP to PDB

XPS to PDB

TTF to PDB

GIF to PDB

WEBP to PDB

PPSX to PDB

EPS to PDB