Any way to make websites load in desktop mode by default?

I am on iPad Pro 12 inches right now. I find it really annoying that many websites on safari load in mobile mode by default, which is really optimized for iPhones.

For example, Linkedin, Facebook, and Twitter. The 12 inch display is enough to power a the desktop version and when I click the desk top version, the webpages are indeed beautiful.

Now, is there any way to make safari load desktop mode by default? I suppose most websites also have an app that works better for ios, but linkedin and facebook are not the case