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Opera browsers such as Opera Developer 54 on my Mac are displaying many pages with huge font sizes, ten times expected size. I wonder if it is some kind of bug related to Opera misinterpreting pages as being for a small mobile device rather than a desktop computer with a 4K monitor.
Ironically, even their own opera.com page exhibits the problem in Opera yet displays fine in Safari. Here is a dual screenshot of a Safari window nested within boundaries of a Opera window on a 4K monitor. Both point to the same page: https://bugs.opera.com/wizard/
Have you tried to hit the
Command ⌘
+0
keys? Or going to “View” and choosing “Actual Size?” – JakeGould – 2018-05-08T23:48:41.4901Yes, I tried “actual size”. No, it does not help. – Basil Bourque – 2018-05-09T00:07:57.373
Wow. Odd. If this is a hardware/software issue I would recommend editing your post to add details on the hardware you are using. More specific the better. Wonder if you have a high DPI monitor? – JakeGould – 2018-05-09T00:38:34.173
Did you check what you've defined as "font size" and "minimum font size" in Settings? – aparente001 – 2019-03-18T14:42:16.993