Every web developer, who knows what they’re doing, probably has a ”tier list” of different browsers in their mind, and understands what web technologies are supported by each tier of browsers. That list may look something like this:

Tier	Examples of browsers	Features
1	Lynx, w3m, wget piped to pup, many assistive tools for people with bad or non-existent vision	Basic text-based web browsing. Usable on a terminal. Does not usually support JavaScript. No images.
2	Links, Dillo	Basic graphical browsing. Supports images and most types of visual formatting. Usually no JavaScript.
3	?	Supports JavaScript. May support Google’s ”HTTP/2” protocol.
4	SeaMonkey, Palemoon, Safari	Supports a wide range of web technologies, but not necessarily the newest chromeisms.
5	Chrome, Firefox	Supports everything.