On Sun, 4 Mar 2018, at 20:26, Michelle Konzack wrote: > Yesterday I was working on the website > <https://www.miila-mahe-aed.eu/animals/dogs.html> > and if I reload the page, Firefox is prefetching ALL HTML5 Videos!, > mean 900 MByte! > > WTF is this? You might be better-off asking at: mozilla-support-firefox@lists.mozilla.org -- Jeremy Nicoll - my opinions are my own.