How Do I Check Differnt Device Compatability Of My Website From Localhost ?

In addition to @Andy's solution, you can also do the testing with almost all the browsers in all major platforms if you can afford some price.

Check this site for trial-
https://www.browserstack.com/[^]

You can test locally hosted sites too.

Hope, it helps :)

There is no way of doing this I'm afraid. Browserstack is the best solution, but other than that you need to test them on the actual devices themselves. Emulators just change the screen size and browser agent, they don't actually emulate how the page will look on that device, or how fast it will scroll, how your plug-ins will work etc.

Testing on all devices is always a hard thing to do. Companies either have the physical devices to test on (or at least the major ones), get employees to test on whatever devices they own, or use something like browserstack. None of those are options for you so you'll just need to hope that if it's ok on all desktop browsers that it's going to be ok on devices too.