[vladvasiliu]

I used to be like this. I actually ran a 14" FHD laptop with a 24" 4k monitor, both at 100%. Using i3 and not caring about most interface chrome was great, it was enough for me to zoom the text on the 4k one. But then we got 27" 5k screens at work, and that had me move to wayland since 100% on that was ridiculously small.

[michaelmrose]

Why not 200% and increase font size slightly in all 3 cases?

[vladvasiliu]

Because although I don't care much about the chrome, I sometimes have to use it. For example, the address bar in firefox is ridiculously small. Also, some apps, like firefox (again) have a weird adaptation of the scroll to the zoom. So if you zoom at 300%, it will scroll by a lot at a time, whereas 200% is still usable.

Also, 200% on an FHD 14" laptop means 960x540 px equivalent. That's too big to the point of rendering the laptop unusable. Also, X11 doesn't support switching DPI on the fly AFAIK, and I don't want to restart my session whenever I plug or unplug the external monitor, which happens multiple times a day when I'm at the office.

[michaelmrose]

14 fhd is 157 ppi 24 4k is 184 ppi

This really isn't this far off. If we imagined the screens overlayed semi-transparently an 16 pixel letter would be over a 14 pixel one.

If one imagines an ideal font size for a given user's preference for physical height of letterform one one could imagine a idealized size of 12 on another and 14 on the other and setting it to 13 and being extremely close to ideal.

>So if you zoom at 300%, it will scroll by a lot at a time, whereas 200% is still usable.

This is because it's scrolling a fixed number of lines which occupy more space at 300% zoom notably this applies pretty much only to people running high DPI screens at 100% because if one zoomed to 300% otherwise the letter T would be the size of the last joint on your thumb and legally blind folks could read it. It doesn't apply to setting the scale factor to 200% nor the setting for Firefox's internal scale factor which is independent from the desktop supports fractional scaling in 0.05 steps and can be configured in about:config

layout.css.devPixelsPerPx

[vladvasiliu]

Right, and 27" 5k is 218 ppi, which isn't that much more than the 24". But don't forget that viewing distance plays a big role in this, and my 14" laptop is much closer than a 27" monitor. Bonus points for our specific model having an absolutely ridiculous viewing angle, so if it's too close the outer border are noticeably dark.

[pshirshov]

Why to have a home if you can sleep in a cardboard box?