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how to change thunderbird font size on inbox page

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  • 1 has this problem
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  • Last reply by Toad-Hall

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The font size of the inboxes are wayyyy too small. ~There is no way of simply setting a larger font anywhere~ without having to break into the settings and follow impossible instructions, is there a simple way of making the font on the inboxes larger? If the simple answer to this is no, can someone please go about making a setting to do so?

Thanks.

The font size of the inboxes are wayyyy too small. ~There is no way of simply setting a larger font anywhere~ without having to break into the settings and follow impossible instructions, is there a simple way of making the font on the inboxes larger? If the simple answer to this is no, can someone please go about making a setting to do so? Thanks.

Chosen solution

I'm not sure what 'impossible instructions' you were trying to follow, but here are some extremely simple instructions with additional images to help. All of these instructions are done within Thunderbird whilst it is running. This is how to increase all the font size in Folder Pane, Message List, Menus etc.

  • Left Click on the 'Menu app icon' (icon with 3 horizontal lines) and left click on 'Preferences' option.

'Preferences' opens in a new tab - see first image

  • In left menu - left click on 'General'
  • Scroll down to the very bottom
  • left click on 'Config Editor' button
  • Accept the risk.

'Advanced Preferences' opens in a new tab - see second image

  • In top search, type: pixels
  • look for the line: layout.css.devPixelsPerPx

It has a default setting - a negative value of -1.0 and to the right you will see a 'pencil' icon

  • left click on the 'pencil' icon for the line: layout.css.devPixelsPerPx

You will now be able to edit the value.

  • Completely remove the negative -1.0 value
  • type in a new value - I suggest you start with a positive number 1.5
  • click on the icon that has a tick (previously it was the pencil icon) and this will save your entry.

Do not close anything at this point because you still have access to the 'Advanced Preferences'. Notice how the font size has increased.

If it has increased too much, then edit that same value again by clicking on the pencil icon and changing the value to : 1.25 and then click on the 'tick' icon.

If the font has not increased enough - then edit that same value again by clicking on the pencil icon and changing the value to : 1.75 and then click on the 'tick' icon.

When happy, close the 'Advanced Preferences' tab.

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Chosen Solution

I'm not sure what 'impossible instructions' you were trying to follow, but here are some extremely simple instructions with additional images to help. All of these instructions are done within Thunderbird whilst it is running. This is how to increase all the font size in Folder Pane, Message List, Menus etc.

  • Left Click on the 'Menu app icon' (icon with 3 horizontal lines) and left click on 'Preferences' option.

'Preferences' opens in a new tab - see first image

  • In left menu - left click on 'General'
  • Scroll down to the very bottom
  • left click on 'Config Editor' button
  • Accept the risk.

'Advanced Preferences' opens in a new tab - see second image

  • In top search, type: pixels
  • look for the line: layout.css.devPixelsPerPx

It has a default setting - a negative value of -1.0 and to the right you will see a 'pencil' icon

  • left click on the 'pencil' icon for the line: layout.css.devPixelsPerPx

You will now be able to edit the value.

  • Completely remove the negative -1.0 value
  • type in a new value - I suggest you start with a positive number 1.5
  • click on the icon that has a tick (previously it was the pencil icon) and this will save your entry.

Do not close anything at this point because you still have access to the 'Advanced Preferences'. Notice how the font size has increased.

If it has increased too much, then edit that same value again by clicking on the pencil icon and changing the value to : 1.25 and then click on the 'tick' icon.

If the font has not increased enough - then edit that same value again by clicking on the pencil icon and changing the value to : 1.75 and then click on the 'tick' icon.

When happy, close the 'Advanced Preferences' tab.