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How to increase Firefox default page zoom setting?

  • 5 antwoorden
  • 1 heeft dit probleem
  • 1 weergave
  • Laatste antwoord van cor-el

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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? Thank You.

Alle antwoorden (5)

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Hi BubbaEinstein,

You could try this add-on:


I'm sure there are others as well.

Hopefully this helps!

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I wonder why changing the default DNS server from Comcast to OpenDNS would cause a smaller default page zoom in Firefox? Surely there must be a setting number within Firefox browser itself that determines the page zoom setting. Using an add-on has the disbenefit of acting up at upgrade time. How do I gain access to the setting number within Firefox browser itself? Who would have access to that info?

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Try in about:config

and change zoom.maxPercent

type in the address bar about:config

then press the button i'll be careful i promise

then type in the bar zoom.maxPercent

then right-click on it, select modify, type a value greater than the current(i can't tell specific because i don't known how zoom you want), click OK,

exit firefox and restart-it.

see also: Zoom.minPercent

thank you

Please mark "Solved" the answer that really solve the problem, to help others with a similar problem.

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Thank you for your kind response.

The Default Zoom is too low for pages newly accessed by Firefox.

Please, how might zoom.maxPercent relate to Default Zoom and solve this issue?


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You can rename the content-prefs.sqlite file to content-prefs.sqlite.old (or delete the file) in the Profile Folder to reset the page zoom on all sites.

You can also try this:

  1. Open the Properties of the Firefox desktop shortcut (right-click: Properties)
  2. Go to the Compatibilities tab
  3. Put a mark before "Disable display scaling on high DPI settings"