This site will have limited functionality while we undergo maintenance to improve your experience. If an article doesn't solve your issue and you want to ask a question, we have our support community waiting to help you at @FirefoxSupport on Twitter and/r/firefox on Reddit.

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.

My default font size is set at 18px. Is this the default default font size for all users of ff 3.6+?

  • 3 replies
  • 22 have this problem
  • 15 views
  • Last reply by cor-el

wally1010
wally1010
more options

I was developing a site in ff when I noticed other browsers were rendering the font size smaller than in firefox. Upon investigation I discovered that my ff 3.6 default font was Adobe Caslon Pro Bold 18px. I have never deliberately set this. My understanding was that all browsers default default font size was 16px. Has ff default font size changed from 16px to 18px?

I was developing a site in ff when I noticed other browsers were rendering the font size smaller than in firefox. Upon investigation I discovered that my ff 3.6 default font was Adobe Caslon Pro Bold 18px. I have never deliberately set this. My understanding was that all browsers default default font size was 16px. Has ff default font size changed from 16px to 18px?

Chosen solution

You can see the defaults in a screenshot in this KB article: Some text shows up bold after upgrade
You can check the font setting in: Tools > Options > Content : Fonts & Colors > Advanced
Default Font: Times New Roman (16)
Fonts for  : Western
Proportional: Serif (16)
Serif  : Times New Roman
Sans-serif  : Arial
Monospace  : Courier New (13)

Read this answer in context 👍 2

All Replies (3)

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

Chosen Solution

You can see the defaults in a screenshot in this KB article: Some text shows up bold after upgrade
You can check the font setting in: Tools > Options > Content : Fonts & Colors > Advanced
Default Font: Times New Roman (16)
Fonts for  : Western
Proportional: Serif (16)
Serif  : Times New Roman
Sans-serif  : Arial
Monospace  : Courier New (13)

wally1010
wally1010 Question owner
more options

Thank you for your prompt reply cor-el. It fully answered my question and the other questions I forgot to ask. I was quite concerned that if the default font size had changed that all new ff users would see my sites with larger than intended font size. It is reassuring that this problem will be limited to my system and a few others who have a similar font size issues.

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

You're welcome.

You can also see preferences that have changed as bold (user set) values on the about:config page.
See http://kb.mozillazine.org/about%3Aconfig