Free Online PDB to EPUB Converter

Convert PDB to EPUB online for free.

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About the output format

When EPUB is the right output

EPUB is the open ebook standard — reflows text, supports tables of contents and metadata, works on every e-reader except Kindle (which uses MOBI/AZW3 natively but converts EPUB on upload). Convert to EPUB when publishing to Apple Books, Kobo, Google Play Books, or shipping direct-to-reader PDFs / DOCX manuscripts.

About the PDB Format

PDB (Palm Database) is a legacy ebook format originally developed for Palm OS handheld devices in the late 1990s. Used by Palm Digital Media (formerly Peanut Press) and later eReader, PDB files stored ebooks as compressed text databases optimized for the limited storage and processing power of Palm PDAs. The format supported basic text formatting, chapter navigation, bookmarks, and simple image embedding.

With the discontinuation of Palm OS devices and the rise of modern eReaders and smartphones, PDB has become an obsolete format. Barnes & Noble acquired the eReader platform and migrated its catalog to EPUB for the Nook ecosystem. Ebooks stored in PDB format can no longer be read on current devices without conversion. Converting PDB files to EPUB, PDF, or MOBI rescues these legacy ebooks for use on modern eReaders, tablets, and reading apps, preserving the text content and basic structure of the original files.

PDB to EPUB FAQ

Quick answers about compatibility, quality, metadata handling, and the most common reasons to convert PDB files to EPUB.

Can I convert PDB books to EPUB for my Kindle or Kobo?

Yes. Upload your PDB ebook and iFormat converts it to EPUB with chapter structure, cover art, and formatting preserved. Load the EPUB onto your Kindle, Kobo, Nook, or any eReader that supports the format.

How to convert PDB to EPUB without losing the table of contents

Chapter navigation, the cover image, and text formatting all carry over during conversion. The EPUB has proper chapter links so you can jump between sections on your eReader just like the original PDB.

Can I convert multiple PDB ebooks to EPUB at once?

Yes — upload a batch of PDB files and iFormat converts them all to EPUB. Each book downloads separately or as a ZIP, so you can convert an entire library in one session.

Does the text still reflow after converting to EPUB?

Yes — EPUB keeps text reflowable, so it adapts to any screen size and font setting on your eReader rather than being locked to a fixed page like a PDF.

Which reader is EPUB for?

EPUB is a reflowable ebook format best for Kobo, Apple Books, and Nook. Convert your PDB to EPUB when your eReader or app opens EPUB more reliably, so the whole library works on one device.

Is there a file size limit for PDB to EPUB conversion?

The free plan supports files up to 50 MB, which covers the large majority of PDB files. For longer or higher-resolution files, Starter raises the limit to 100 MB, Plus to 1 GB, and Pro to 5 GB.

Need the reverse conversion?

Convert EPUB back to PDB with our companion tool.

EPUB to PDB converter

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