Join the AMA (Ask Me Anything) with the Firefox leadership team to celebrate Firefox 20th anniversary and discuss Firefox’s future on Mozilla Connect. Mark your calendar on Thursday, November 14, 18:00 - 20:00 UTC!

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

Display font size

  • 3 replies
  • 1 has this problem
  • 1 view
  • Last reply by macssam

more options

Is there a way to increase the display (menus, addresses, etc) font size? I have already searched the forum and the suggestions are no longer applicable. There is no "Config Editor" or a "layout css.devPixelPerPx" file as referenced in existing the current suggestions as a way to increase font size. Using TB 78.10.

Is there a way to increase the display (menus, addresses, etc) font size? I have already searched the forum and the suggestions are no longer applicable. There is no "Config Editor" or a "layout css.devPixelPerPx" file as referenced in existing the current suggestions as a way to increase font size. Using TB 78.10.

Chosen solution

Yes it still exists, but the route to finding it has changed since version 78

  • 'Menu icon (3 lines) > Options/Preferences > 'General'
  • Scroll all the way to the bottom
  • click on 'Config Editor' button

Note : second image below shows where it is via bottom of 'General'. However, you could use the top right search which is new, to search for config editor - I have provided an image below for this as the search is new.

It may say 'here be dragons' as a type friendly warning to be careful :)

  • In top search type: pixels
  • Look for this line: layout.css.devPixelsPerPx

The default is a negative number: -1.0

  • Double click on that line to open a small window.
  • clear all contents and type in a positive number eg: 1.25 or 1.5 or 1.75 or 2.0
  • click on OK

The effects are instant, so you can easily modify as required

Read this answer in context 👍 0

All Replies (3)

more options

Chosen Solution

Yes it still exists, but the route to finding it has changed since version 78

  • 'Menu icon (3 lines) > Options/Preferences > 'General'
  • Scroll all the way to the bottom
  • click on 'Config Editor' button

Note : second image below shows where it is via bottom of 'General'. However, you could use the top right search which is new, to search for config editor - I have provided an image below for this as the search is new.

It may say 'here be dragons' as a type friendly warning to be careful :)

  • In top search type: pixels
  • Look for this line: layout.css.devPixelsPerPx

The default is a negative number: -1.0

  • Double click on that line to open a small window.
  • clear all contents and type in a positive number eg: 1.25 or 1.5 or 1.75 or 2.0
  • click on OK

The effects are instant, so you can easily modify as required

more options

THANK YOU!! THANK YOU!! TB much easier to read at 1.25! Almost missed Config Editor again. Was not expecting an option to be shown in the lower right corner of the page when all other options are listed down the left margin. Again, thank you - and for the rapid response.

more options

@ Matt layout.css.devPixelsPerPx only the Config layout bar size changes everything else stays the same