How we tested

We tested each of the six browsers on the same M1 MacBook Pro running macOS Catalina, connected via 802.11ac Wi–Fi to 150MB fibre broadband for the fastest possible internet connection. Where possible we browsed with privacy features on and off, so we could see what difference those features made to browsing speed and site rendering, and we investigated their privacy settings to see what control they offered over the kinds of trackers and adverts you might see.