[neslinesli93]

I don't know, sorry.

I mean, you can be completely sure that the website works offline by unplugging the cable/turning off your wifi connection after it's completely loaded. But that's just a functional test, not something you can expect users to do during a normal browsing session

[purplecats]

thats not enough, it can send it in the next connection. unless you want to load a site once, and never connect your computer to the internet ever again.