We're calling on all EU-based Mozillians with iOS or iPadOS devices to help us monitor Apple’s new browser choice screens. Join the effort to hold Big Tech to account!

Avatar for Username

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

This thread was archived. Please ask a new question if you need help.

FF40 with Win10 makes Helvetica bold by default

  • 6 replies
  • 5 have this problem
  • 1 view
  • Last reply by Brian

chelseawolfe
chelseawolfe
more options

I'm using Windows 10. Unlike Firefox 39, the latest version 40 has a weird way to render Helvetica. (Or is it Helvetica Neue?) What am I to do?

I'm using Windows 10. Unlike Firefox 39, the latest version 40 has a weird way to render Helvetica. (Or is it Helvetica Neue?) What am I to do?
Attached screenshots

Chosen solution

Sorry, I made a mistake. This is the correct solution:

Set gfx.font_rendering.directwrite.enabled to true and mozilla.widget.render-mode to 6.

Read this answer in context 👍 0

All Replies (6)

cor-el
cor-el
  • Moderator
  • Top 10 Contributor
more options

You can right-click and select "Inspect Element" to open the Inspector (Firefox/Tools > Web Developer) with this element selected.

You can check the font used for selected text in the Font tab in the right pane of the Inspector.

chelseawolfe
chelseawolfe Question owner
more options

cor-el said

You can right-click and select "Inspect Element" to open the Inspector (Firefox/Tools > Web Developer) with this element selected. You can check the font used for selected text in the Font tab in the right pane of the Inspector.

It appears to be Helvetica Neue. Anyway, other fonts like Mozilla's very own FF Fira Mono look much thinner and terribly rendered with FF40 as well. I can reproduce this with the respective portable versions of FF39 and FF40. The upgrade causes a significant change in how fonts are rendered.

chelseawolfe
chelseawolfe Question owner
more options

For some reason, Direct 2D was deactivated. I've seen bug reports linking this to Nvidia drivers, but I don't have that kind of hardware. So, I opened about:config and set

gfx.font_rendering.directwrite.enabled to false and mozilla.widget.render-mode to 6.

If the last entry is missing, create a new integer.

Everything's fine now.

chelseawolfe
chelseawolfe Question owner
more options

Oh, and don't forget to restart the browser! :)

chelseawolfe
chelseawolfe Question owner
more options

Chosen Solution

Sorry, I made a mistake. This is the correct solution:

Set gfx.font_rendering.directwrite.enabled to true and mozilla.widget.render-mode to 6.

Brian
Brian
more options

I had this problem with Windows 8.1. Turns out the only Helvetica Neue font I had installed was the Bold type. Apparently Firefox, unlike Chrome, chooses this variant even if the website didn't ask for it.

I just deleted the font from my system and that fixed the problem.