Version testing, how to install multiple browsers in ubuntu and how to test for retina?

Question

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Install via virtual machines? But where to download all those old browsers? And how to test for retina if there are no devices with retina? looking for free solutions

Answer 1

https://www.browserstack.com/

Answer 2

there is a certain browser in ubuntu, 2ip.ru defines it as apple webkit safari, but the pixel density like that of apples will not appear anyway ... and this is a very well-known problem

Answer 3

I won’t say about old browsers, but it’s elementary to test the retina: for example, in Chrome you need to press F12, the developer panel will open and click on the “Togle Device Toolbar” icon, the required pixel density has already been set for each device in the dropdown.