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System font size is too small. How do I make it larger?

  • 12 replies
  • 5 have this problem
  • 1680 views
  • Last reply by John Wyman

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I need to make the system font larger. I am having a hard time reading the folders, the listed emails, etc. How can I make this larger. I have Thunderbird 68.0 and the add-on that sounds like what I need is not compatible.

Chosen solution

Try this: Tools/Options/Advanced/General/Config. editor, right-click the preference layout.css.devPixelsPerPx, Modify, and set it to 1.25, OK to close Options.

https://support.mozilla.org/en-US/questions/1269361

Read this answer in context 👍 2

All Replies (12)

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Chosen Solution

Try this: Tools/Options/Advanced/General/Config. editor, right-click the preference layout.css.devPixelsPerPx, Modify, and set it to 1.25, OK to close Options.

https://support.mozilla.org/en-US/questions/1269361

Modified by sfhowes

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Thank you so much. I can now see my emails.

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did the layout.css.devPixelsPerPx thing and it works.== thanks

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There is no "options" under the tools menu on my Thunderbird, which is 68.3.0 for Mac.

There is supposed to be an add-on for font size, but although the add-on page claims it works on 68, when I try to load it Thunderbird tells me it is not compatible.

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David Friedman said

There is no "options" under the tools menu on my Thunderbird, which is 68.3.0 for Mac. There is supposed to be an add-on for font size, but although the add-on page claims it works on 68, when I try to load it Thunderbird tells me it is not compatible.

See this for Mac instructions:

https://support.mozilla.org/en-US/questions/1269361#answer-1264274

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Thanks. That worked.

Seems unnecessarily complicated for a feature I would expect many users to want.

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Yeah, this is kind of silly to be buried so deep in the bowels of the app.

 I notice font usability is often overlooked by app writers a, even though this is the most front facing item  to the user. 
 Sad , aint it ?
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ools/Options/Advanced/General/Config. editor, right-click the preference layout.css.devPixelsPerPx, Modify, and set it to 1.25, OK to close Options.

WORKED PERFECTLY.

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Thank you thank you thank you! Old eyeballs need the help!


Aw hell. It makes the T-bird structural text (mailbox names, menu items) larger - -but the text IN the message I'm typing in still minuscule! USED to be I could change the font size in the message -- AT the message.... Now... no help...

Modified by Elenor

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Elenor said

Thank you thank you thank you! Old eyeballs need the help! Aw hell. It makes the T-bird structural text (mailbox names, menu items) larger - -but the text IN the message I'm typing in still minuscule! USED to be I could change the font size in the message -- AT the message.... Now... no help...

To change the displayed fonts for received and composed message bodies, see this post: https://support.mozilla.org/en-US/questions/1277542

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Will not allow me to Uncheck 'Allow messages to use other fonts'. help

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Your message above solved the issue of message index font too small.

Thanks.

John