Free PDF viewer Acrobat Reader supports two-page spread viewer. After selecting the PDF file from the menu, please select View -> Page View -> Facing Page View again. If you need to swap left and right pages, please use the free app. Amazon.com includes two-page spreads for KINDLE books, support for languages around the world, and browser viewing functions for LINUX, GAME machines, 4K TVs, smartphones, tablets, etc., and allows you to display two-page spreads even if you hold the monitor vertically or two monitors side by side. , I would like to be able to use AI to automatically determine and swap the left and right pages without using LINUX, GAME machines, 4KTV, or apps. I would like to see all of these functions improved as standard features of HTML5 and CSS3 on all browsers, including LINUX and TRON OS SWITCH, game machines including PS5 and XBOX, Windows, MAC, and 4KTV. Aon CEO Masahiro Ishizuka.