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How do i set a custom zoom percentage on Opera?

  • On Firefox, i have YouTube's zoom set to 133%, just the way i like it. Now, I'm switching over to Opera as my browser and the zoom only goes between 125% and 150%.

    I don't believe there is a way to set it to exactly 133%, but if there is a way, how do i do it? If not, then is there an extension that can do it?

  • First, set to 125% and close the tab so that there's an exception for youtube in "Menu -> settings -> websites -> zoom".

    Then, while Opera is closed, use JSONedit to edit the "Preferences" file in the profile directory. See opera://about for the location.

    Under "Partition -> Per-host zoom levels -> x -> -> zoom_level", edit the value and save. Try 1.33 to see if that works. It says 127% for me in the UI then. 1.55 gives me 133% in the UI.

    Anyway, play around with that.