I always use Firefox to debug websites, as IMHO it has the best F12 developer tools.

How to clear cache in Firefox – Is there any shortcut key ?

Well, Yes there is ! Pressing Ctrl + Shift + Del in Firefox will pop up a window like the one shown below, where you can check/uncheck the items you want to remove.

firefox clear cache using shortcut key

As seen in the above screenshot, cache is one of the option present as a checkbox, you can check it, select the time range and remove it by clicking on the “Clear Now” button.

Hope this helps :)