[jhowell]

From Digital Rights Management on Amazon KDP:

Effective January 20, 2026, verified purchasers can download the EPUB and PDF files of your confirmed DRM-free books.

Digital Rights Management (DRM) is a technology you can apply when publishing your eBook that affects how readers can access their purchased content.
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Applying DRM limits reader access to Kindle apps and devices only. DRM technology is designed to limit unauthorized access to or copying of digital content files.

Choosing not to apply DRM (DRM-free) gives readers additional flexibility to enjoy their purchased content across a wider range of devices and applications by providing downloadable EPUB and PDF files. Your royalty rates and payment structure remain unchanged regardless of your DRM selection.
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Reader download access

Effective January 20, 2026, readers can download EPUB and PDF files of your DRM-free books from their Manage Your Content and Devices page on Amazon. Only verified purchasers who have bought your book can access the EPUB/PDF files. Customers who borrowed your books through Kindle Unlimited or other services can't download the EPUB/PDF files, even if the books are DRM-free.

If readers downloaded EPUB/PDF files when your book was DRM-free, they will retain access to those downloaded EPUB/PDF files even if you later apply DRM. However, the option to download EPUB/PDF files will not be available after your DRM setting change is live (approx. 24-72 hours after you publish).