Microsoft brings back EPUB support in Edge Canary. The feature lets users open and read EPUB documents directly on Microsoft Edge. It doesn't sport the same experience as the proprietary engine ...

The upcoming update for the Kindle will bring this new support for the feature, and users will be able to open ePub files directly instead of the manual conversion done online.

Amazon elected to support other file formats, including .Mobi, which it acquired along with the French company Mobipocket in 2005, and .AZW, which is basically an Amazon-branded version of .Mobi.