Amazon is eliminating users' ability to download Kindle books without WiFi, meaning you’ll want to move your library as soon as possible.

Downloading your Kindle books one by one could take days. But this hack helped me download thousands in far less time. Here's how it works, step-by-step.

If you're an avid e-book reader or someone who has an extensive library of Kindle content, now is the time to back up your books: Amazon is killing the option to save e-books to your computer.

Amazon confirmed the removal of the book download feature in a statement to The Verge. “Customers can continue reading books previously downloaded on their Kindle device, and access new content through the Kindle app, Kindle for web, as well as directly through Kindle devices with WiFi capability,” said Amazon spokesperson Jackie Burke.

Last week we got the news that Amazon was killing off an older but very useful tool called Download & Transfer via USB, which lets you download your ebook purchases to a computer. It's set to disappear tomorrow – Wednesday,