Digital Rights Management, or DRM, is specifically designed to control the use, modification, and distribution of any copyrighted material and is now a common feature of everything from ebooks to music files.

Although it's easy to understand why the rights holders are keen to protect their work, as a consumer, DRM is an extremely frustrating aspect of modern life.

In this article, we explain why removing DRM restrictions is important and show you how you can eliminate them on your own ebooks.

How to Remove DRM From Your Ebooks: 6 Methods to Try
https://www.makeuseof.com/tag/ways-to-remove-drm-from-ebooks/

To get started on removing DRM from your ebooks, just download the tools archive from the link below. Unzip the archive, and start reading.

Aussi :
DRM Removal Tools for eBooks
https://apprenticealf.wordpress.com/2012/09/10/drm-removal-tools-for-ebooks/

Ebook Formats, DRM and You — A Guide for the Perplexed
https://apprenticealf.wordpress.com/2011/01/13/ebooks-formats-drm-and-you-%E2%80%94-a-guide-for-the-perplexed/

DeDRM_plugin.zip

This plugin will remove the DRM from:

• Kindle ebooks (files from Kindle for Mac/PC and eInk Kindles).
• Adobe Digital Editions (v2.0.1***) ePubs (including Kobo and Google ePubs downloaded to ADE)
• Adobe Digital Editions (v2.0.1) PDFs

For limitations and work-arounds, see the FAQ at https://github.com/apprenticeharper/DeDRM_tools/blob/master/FAQs.md

Installation

Open calibre's Preferences dialog. Click on the "Plugins" button. Next, click on the button, "Load plugin from file". Navigate to the unzipped DeDRM_tools folder, find the file "DeDRM_plugin.zip". Click to select the file and select "Open". Click "Yes" in the "Are you sure?" dialog box. Click the "OK" button in the "Success" dialog box.

Customization

For Kindle ebooks from an E-Ink based Kindle (e.g. Voyage), or books downloaded from the Amazon web site 'for transfer via USB' to an E-Ink base Kindle, you must enter the Kindle's serial number in the customisation dialog.

When you have finished entering your configuration information, you must click the OK button to save it. If you click the Cancel button, all your changes in all the configuration dialogs will be lost.

Troubleshooting

If you find that the DeDRM plugin is not working for you (imported ebooks still have DRM - that is, they won't convert or open in the calibre ebook viewer), you should make a log of the import process by deleting the DRMed ebook from calibre and then adding the ebook to calibre when it's running in debug mode. This will generate a lot of helpful debugging info that can be copied into any online help requests. Here's how to do it:

• Remove the DRMed book from calibre.
• Click the Preferences drop-down menu and choose 'Restart in debug mode'.
• Once calibre has re-started, import the problem ebook.
• Now close calibre.

A log will appear that you can copy and paste into a comment at Apprentice Alf's blog, http://apprenticealf.wordpress.com/ or an issue at Apprentice Harper's repository, https://github.com/apprenticeharper/DeDRM_tools/issues . You should also give details of your computer, and how you obtained the ebook file.

Epubor Ultimate for Win is known as a professional program which allows to easily convert DRM-signed or DRM-free books to file formats supported by Kindle and