How to Increase Firefox' default page zoom? Changed my computer's default DNS server from Comcast to OpenDNS. A side effect, webpages appear in Firefox as if I had reduced them via the Ctrl minus keys. To get back to a comfortable appearance I now have to hit Ctrl plus keys. Anybody know how to set Firefox default page zoom to a larger setting? Rather not use add-ons due to issues they can cause at upgrade time.