Epubor Ultimate Review 2025: Features, Pros & Cons


What Epubor Ultimate Does (At a Glance)

Epubor Ultimate focuses on three main capabilities:

  • Convert eBooks between popular formats (e.g., EPUB, MOBI, AZW3, PDF).
  • Remove DRM from eBooks purchased from many retailers, enabling personal-use transfers to different reading apps/devices where allowed by law.
  • Batch process large libraries, converting and exporting multiple titles at once.

When to Use Epubor Ultimate

Use Epubor Ultimate if you need to:

  • Move legally purchased books between ecosystems (for example, from Amazon Kindle to an EPUB reader) for personal use.
  • Convert formats for compatibility with a particular device or app.
  • Create a standardized library (same format/metadata across titles).
  • Back up your purchases in a usable format.

Do not use it to share copyrighted content or distribute DRM-free copies of books you don’t own rights to.


  • DRM laws vary by country. In many places, removing DRM—even for personal-use—is legally restricted.
  • Only remove DRM for books you own and for personal, non-distributive purposes where local law permits.
  • Respect authors’ and publishers’ rights: do not distribute DRM-free copies or share them publicly.

System Requirements & Installation

  • Available for Windows and macOS.
  • Requires a modern CPU, several hundred MBs of disk space, and sufficient RAM for batch jobs.
  • Download the official installer from the vendor’s site and follow standard macOS/Windows installation steps. Keep the software updated for best compatibility with new eBook formats and DRM changes.

Getting Started: Main Interface Overview

  • Library pane: lists imported books.
  • Conversion/Output settings: choose target format, output folder, and advanced options (e.g., preserve metadata, table of contents).
  • DRM removal area: drag-and-drop supported files or point the app to local reader libraries (e.g., Kindle for PC/Mac, Adobe Digital Editions).
  • Batch processing controls: queue management, progress indicators.

Step-by-Step: Removing DRM (Typical Workflow)

Note: Steps assume you are removing DRM from books you legally own and where permitted.

  1. Prepare:

    • Install and authorize any required reader apps (e.g., Kindle for PC, Adobe Digital Editions) if working with files tied to those apps.
    • Locate your eBook files (.azw/.azw3/.mobi/.epub/.acsm etc.) on disk or export them from the reader app.
  2. Add books to Epubor:

    • Drag-and-drop files into the app or use the “Add” or “Load” button. Some apps auto-detect local reader libraries.
  3. Remove DRM:

    • For many files, Epubor will remove DRM automatically when the book is added and the reader app authorization is present.
    • Confirm output folder and file names.
  4. Verify:

    • Open the output file in your desired reader app (e.g., Calibre, iBooks, Kobo) to make sure the book opens normally and metadata is intact.

Step-by-Step: Converting Formats

  1. Choose source files (single or batch).
  2. Select target format (EPUB, MOBI, AZW3, PDF, TXT, etc.).
  3. Adjust conversion settings:
    • Preserve or edit metadata (title, author, cover).
    • Layout options (margins, line height) — important when converting to fixed-layout formats like PDF.
    • Image handling and fonts embedding when necessary.
  4. Start conversion and monitor progress.
  5. Review converted files on target device/app.

Troubleshooting Common Issues

  • Converted book won’t open: verify DRM was removed successfully; check file integrity; try a different target format.
  • Formatting problems (line breaks, missing images): tweak conversion options, try converting to an intermediate format (e.g., EPUB → AZW3) or use Calibre for advanced editing.
  • Missing metadata or cover: use built-in metadata editor or Calibre to fix tags and re-embed the cover.
  • DRM persists: ensure the source file is properly authorized in its reading app and the app is closed (or restarted) before processing.

Tips for Best Results

  • Keep original files backed up.
  • Batch process in small groups first to confirm settings before converting an entire library.
  • Use highest-quality source files for format conversion to preserve images and layout.
  • For reflowable text, prefer EPUB; for Kindle devices, AZW3 or MOBI may be preferable.
  • Use Calibre alongside Epubor for advanced metadata editing and library management.

Alternatives and When to Choose Them

Tool Strengths When to Use Instead
Calibre (with plugins) Powerful, free, strong format conversion and metadata tools You need advanced library management, custom conversion recipes, or prefer open-source
Any eBook Converter tools Often simpler UIs Quick one-off conversions without DRM needs
Vendor apps (Kindle/Kobo) Official compatibility When you only need reading on the vendor’s own devices/apps and don’t need conversions

Example Workflows

  • Converting Kindle purchases to EPUB for reading on Kobo:

    1. Export Kindle files via Kindle for PC/Mac (authorized).
    2. Add files to Epubor to remove DRM.
    3. Convert to EPUB and transfer to Kobo.
  • Preparing a PDF-free reflowable reader file:

    1. Start from the highest-quality EPUB source.
    2. Convert to EPUB/AZW3 with settings tuned for reflow (no fixed layout).
    3. Review and fix any formatting issues in Calibre.

Final Notes

Epubor Ultimate can dramatically simplify personal eBook workflows: format conversion, DRM removal (where legal), and batch processing. Use it responsibly, keep backups, and pair it with tools like Calibre for maximum flexibility.

If you want, I can write a shorter how-to for a specific task (e.g., convert Kindle to EPUB step-by-step) or provide screenshots and exact menu names for Windows or macOS.

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