FormatDrop
How-To Guide

How to Convert PRC to EPUB

PRC (Palm Resource Code, also called Mobipocket) is a legacy e-book format from the Palm OS and pre-Kindle Mobipocket era. Converting PRC to EPUB modernizes the file for current e-readers like Kobo, Apple Books, Nook, and any reading app that supports the EPUB standard.

Open PRC to EPUB Converter

Step-by-step instructions

  1. 1

    Upload your PRC file

    Select your .prc file. PRC files often come from old Palm OS PDAs, pre-2011 Mobipocket downloads, or Project Gutenberg's Mobipocket section.

    Go to converter
  2. 2

    Choose EPUB as output

    Select EPUB. The converter parses PRC's HTML-based content and rewrites it as the EPUB ZIP+XML structure. Chapter structure and metadata transfer cleanly.

  3. 3

    Read on your modern device

    Sideload the EPUB to your Kobo, Apple Books, or any reader. The reading experience is dramatically better than the original PRC on modern displays.

Why convert PRC to EPUB?

PRC is the format from the e-book era before EPUB won. Converting to EPUB modernizes ancient e-books for current devices.

Your files never leave your device

FormatDrop runs the conversion engine entirely inside your browser using WebAssembly. No file upload. No server. Nothing stored. You can verify this by opening DevTools → Network tab and watching: zero upload requests.

Frequently asked questions

Is PRC the same as MOBI?
Effectively yes — both are Mobipocket-compatible formats with different file extensions. Some PRC files may use the older Palm DOC format inside, but most are MOBI-compatible. Calibre handles both formats interchangeably.
How do I convert PRC to EPUB with Calibre?
Add the PRC to Calibre, click Convert books, choose EPUB as output format, click OK. Calibre handles all variants of PRC (Mobipocket, Palm DOC, modified MOBI) automatically.
Will my notes and bookmarks transfer?
Notes/highlights stored in the PRC file itself transfer. However, most PRC notes were stored in separate database files (the Palm OS approach), which conversion tools cannot read.
Convert PRC to EPUB Now — Free

No account. No upload. Works in any browser.

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