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!

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.

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

Natao arisiva ity resaka mitohy ity. Mametraha fanontaniana azafady raha mila fanampiana.

font sizes changes and preference font size setups do not have any affect what so ever

  • 1 valiny
  • 4 manana an'ity olana ity
  • 1 view
  • Valiny farany nomen'i cor-el

more options

I made some changes on several different setups including on page that contains font sizes and letter parameters. Anyway, after I was done, all the font sizes have acted like lottery. If I put like 10 for font size or 30, there are no difference. Only thing that I can use to change font size is trough page enlargement, but this I have to do all the time, everytime after I close window or start new tab.

I made some changes on several different setups including on page that contains font sizes and letter parameters. Anyway, after I was done, all the font sizes have acted like lottery. If I put like 10 for font size or 30, there are no difference. Only thing that I can use to change font size is trough page enlargement, but this I have to do all the time, everytime after I close window or start new tab.

All Replies (1)

more options

Try "Reset all user preferences to Firefox defaults" on the Safe mode start window.

See also http://kb.mozillazine.org/Resetting_preferences