Which format to choose depends on the device you plan to use — computer, tablet, or smartphone — and your operating system. For detailed guidance on which format suits you best, check out our device guide.

Absolutely! Once you purchase an e-book, it’s completely yours. It’s stored in your account on knigdom.com, and you can access it anytime by logging in with your username and password. Most formats can be downloaded as many times as you like, but to prevent misuse, we apply small download limits. If you see a message saying your licenses are used up when downloading, contact our support team, and we’ll quickly restore your license.