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Quoth · 09-30-2021, 11:36 AM

Two A4 pages side by side is A3

At 300 ppi (pixels per inch) the image needs to be 3508 x 4961 pixels.
At 150 ppi the image needs to be 1754 x 2480 pixels.
A 1440 x 2560 16:9 panel (Video 2K) will let you read two A4 pages side by side. At at about 24" is nearly actual size. That's about 122 dpi which is about a minimum resolution. My 2002 1600 x 1200 laptop was about 15.5" 4:3 or about 133 dpi. My current laptop screen is 15" and at 1920 x 1080 not as good even for one A4 unless I was to tip it on its side to 1080 x 1920 and use a separate keyboard. My 2K screen does rotate, but the 9:16 aspect is too tall for portrait mode. You'd get crick using the full height of the screen.

Some desktop and a few tablet epub reader programs/apps and some ereaders can do two two epub pages side by side.

09-30-2021, 11:36 AM	#48
Quoth Still reading Posts: 13,651 Karma: 103503445 Join Date: Jun 2017 Location: Ireland Device: All 4 Kinds: epub eink, Kindle, android eink, NxtPaper	Two A4 pages side by side is A3 At 300 ppi (pixels per inch) the image needs to be 3508 x 4961 pixels. At 150 ppi the image needs to be 1754 x 2480 pixels. A 1440 x 2560 16:9 panel (Video 2K) will let you read two A4 pages side by side. At at about 24" is nearly actual size. That's about 122 dpi which is about a minimum resolution. My 2002 1600 x 1200 laptop was about 15.5" 4:3 or about 133 dpi. My current laptop screen is 15" and at 1920 x 1080 not as good even for one A4 unless I was to tip it on its side to 1080 x 1920 and use a separate keyboard. My 2K screen does rotate, but the 9:16 aspect is too tall for portrait mode. You'd get crick using the full height of the screen. Some desktop and a few tablet epub reader programs/apps and some ereaders can do two two epub pages side by side. Last edited by Quoth; 09-30-2021 at 11:38 AM.