How to test a site on different screen sizes?

Question

Screen resolution

The screen resolution is 1366 by 768, you can test the site on laptops, tablets and smartphones, how to test on screens with a resolution of more than 1366/768?

Answer 1

The most reliable ways to check on different devices look something like this: 1 , 2 , 3
Of course, there are some emulators, but for some reason large studios keep a zoo of devices.