Hello quartz, You can't really clear the cache of a very specific website but you can clear the cache, or history of more general time ranges, like 1 hour, 2 hrs, 1 day, etc. Do that by clicking Ctrl+Shift+Delete on your Keyboard together. Hoped I helped and Stay Safe!

Hi quartz, glad to see you in the mozilla support forum.

yes you can clear cache associated with certain websites and leave cache for other websites you want to keep. You just have to follow these steps:-

1. First go to the menu bar or click the menu icon.
2. then, click on the options.
3. then, click on privacy & security.
4. then, you will find options for cookies and site data.
5. In this menu you have to click on Manage Data.
6. then, a list will be open where all the sites with their storage will be displayed.
7. just select the site and click on remove button as you can see in the picture.

If it doesn't solved your problem, then please tell us in reply section. Thanks for raising your question in Mozilla Support Forum.

thanks for those. there might stil be loading problems, it could well be with the website tho rather than FF

(it's the UK daily mail website (a profile page) if anyone really wants to know - not the sort of thing I'd mention in polite company)

I can't do a blanket clear all at the moment, rarely can to be honest, but might try at some point in the next few days if poss