PDB to ICO Converter

PDB to ICO — straightforward online converter

Choose Files

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

Private and Secure

Your PDB uploads are purged right after processing, and converted ICO outputs expire within 24 hours — privacy by design.

Cross-Platform Support

Convert PDB to ICO from any operating system. The tool runs in your browser — desktop, tablet, or phone.

Instant Results

Your PDB to ICO conversion is done within moments. The pipeline is optimized for speed and minimal wait times.

How to convert PDB to ICO

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

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

Let the file convert and you can download your ico 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

ICO is the icon file format for Microsoft Windows, introduced with Windows 1.0 in 1985 and serving as the standard container for application icons, file type icons, and shortcut icons throughout the Windows ecosystem. An ICO file bundles multiple image variants within a single container — each at different sizes (16x16, 32x32, 48x48, 256x256, and others) and color depths (4-bit, 8-bit, 24-bit, 32-bit with alpha) — allowing Windows to select the most appropriate image for each display context, from tiny taskbar buttons to large desktop icons. The container structure consists of an ICONDIR header, an array of ICONDIRENTRY records describing each variant, and the image data itself. Since Windows Vista, ICO files support embedded PNG-compressed images for the larger sizes (typically 256x256), dramatically reducing file size while maintaining quality with full alpha transparency. One advantage is automatic size adaptation — Windows pulls the optimal resolution from the ICO container for each context (Explorer list view, desktop tile, Alt-Tab preview), ensuring crisp display without the application managing separate image files. The format's operating system-level integration is another core strength: ICO files serve as the identity mechanism for executables, file associations, and shortcuts across all Windows versions, and web browsers use favicon.ico for website identity in tabs and bookmarks. ICO creation and editing is supported by image editors like GIMP, Inkscape, and dedicated icon tools, and the format remains essential for Windows application development.

Developer: Microsoft

Initial release: 1985

Frequently Asked Questions

Why convert PDB to ICO?

ICO offers Windows desktop and web icons — converting from the legacy PDB format gives your content modern compatibility.

What programs open ICO files?

You can open ICO files with Windows Explorer, any browser, icon editors. Most platforms have at least one built-in or free option available.

Will image dimensions change during conversion?

Pixel dimensions remain the same unless you choose to resize. The ICO output matches the original PDB dimensions by default.

Is the conversion process secure?

Security is built in — source PDB files and converted ICO outputs are automatically removed from servers after processing.

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 ICO?

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

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

PNG to ICO

JPG to ICO

SVG to ICO

JPEG to ICO

WEBP to ICO

JFIF to ICO

BMP to ICO

GIF to ICO

AVIF to ICO

PDF to ICO

AI to ICO

PSD to ICO

EPS to ICO

PPTX to ICO

DOCX to ICO

CUR to ICO

HEIC to ICO

XCF to ICO

TIFF to ICO

TGA to ICO

TXT to ICO

CDR to ICO

JPE to ICO

DOC to ICO

ODT to ICO

WMF to ICO

XLSX to ICO

DDS to ICO

EMF to ICO

XPM to ICO