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how to increase font size with Firefox installed on my Chromebook.

  • 5 replies
  • 3 have this problem
  • Last reply by mikedu4365

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The websites are too small to read on my Chromebook. How do I increase the font size?

All Replies (5)

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What version of Firefox runs on Chromebook? Is it the Android version? You may want to try this:

(1) Open a new tab to about:config (type about:config in the Awesomebar and tap the go arrow or tap Enter).

You may want to bookmark this for easier future access.

(2) In the search box, type devp and pause while Firefox filters the list

(3) Tap the layout.css.devPixelsPerPx twice, and edit the value from -1.0 to 4.0 and tap the Enter/Return key.

If this is already the default global scaling factor (as on a phone with a high density display), you won't see any change.

Try adjusting this value to one that works for your eyes. However, bear in mind that this affects the resolution reported to websites. You can use this test page to see what I mean:

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Thanks but it's Firefox focus. Your fix doesn't work for this version. As far as I know it's the only version that works on a Chromebook. I got it from the Google Play Store. I don't think there are any tabs to open as far as I know. I've tried Control Plus and that doesn't work. I've looked at settings and can't see where I can increase the font size. Thanks anyway for the response

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Hey there,

So I am really excited to hear that it works on the Chromebook. If you gdon't mind me asking, what model and version is the Chromebook?

All the best, Rachel

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Hi mikedu4365

Does your Chromebook display have touch? If so, you should be able to pinch and zoom to make the fonts bigger on both Firefox for Android and Firefox Focus for Android. This is probably not exactly what you are looking for since you have to do this for every site with small fonts manually but I hope it helps a wee bit.



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It's Firefox Focus no touch screen. Acer Model CB3-431-C5FM. Got Firefox from the Play Store.