HTML to PDB Converter

Save web pages as PDB eBooks — free online conversion tool

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Legacy Device Support

PDB format works on Palm devices and compatible reading apps — bring web content to platforms that other formats overlook.

Cloud-Powered Process

All conversion happens on Convertio servers — paste a URL or upload a page and let remote infrastructure handle the rest.

Fast Turnaround

HTML to PDB conversion finishes in seconds. Your web page becomes a downloadable eBook almost as soon as you submit it.

How to convert HTML to PDB

1

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

2

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

3

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

About formats

HTML (HyperText Markup Language) is the standard markup language for creating web pages, originally conceived by Tim Berners-Lee at CERN in 1991 and later standardized by the W3C and WHATWG. HTML structures content using a system of nested tags that define headings, paragraphs, lists, links, images, tables, forms, and multimedia elements, with CSS handling visual presentation and JavaScript adding interactivity. The language has evolved through major versions — HTML 2.0 (1995), HTML 4.01 (1999), XHTML 1.0 (2000), and the current HTML Living Standard (evolved from HTML5, published 2014) — each expanding semantic vocabulary and capabilities. HTML documents are plain text files interpretable by any web browser, and the language's role extends beyond websites: email formatting, ebook content (EPUB), application interfaces (Electron, Cordova), and document export all rely on HTML. One advantage is universal rendering — every computing device with a browser displays HTML content, making it the most widely supported document format in existence. The semantic markup model provides another strength: elements like <article>, <nav>, <aside>, and <figure> carry meaning that benefits accessibility tools, search engine indexing, and content reuse. The open, W3C/WHATWG-governed specification ensures vendor independence, and HTML's text-based nature means documents are trivially created, inspected, and processed with any programming language.
Initial release: 1993
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 save a web page as a PDB eBook?

PDB is essential for reading web content on Palm devices and legacy mobile applications that rely on this eBook format.

What applications open PDB eBooks?

Palm Reader, iSilo, and several cross-platform eBook apps can open PDB for reading on a variety of devices.

Can I convert a live webpage by entering its URL?

Yes — paste the address and Convertio retrieves the page, processes its content, and produces a downloadable PDB file.

Is PDB still useful today?

PDB is largely a legacy format, but it remains necessary for users with Palm-based devices or compatible reading software.

Does the conversion retain text formatting?

Basic formatting such as paragraphs and bold text is preserved within the structural constraints of the PDB format.

Is there any cost for this tool?

HTML to PDB conversion is free for everyday use. Premium plans unlock higher limits for bulk or large-scale conversions.

HTML to PDB Quality Rating

4.5 (165 votes)
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