Windows 10 reached EOS (end of support) on October 14, 2025. If you are on Windows 10, see this article.

搜尋 Mozilla 技術支援網站

防止技術支援詐騙。我們絕對不會要求您撥打電話或發送簡訊,或是提供個人資訊。請用「回報濫用」功能回報可疑的行為。

了解更多
已解決 封存

V.22 Font size very large; intro page opens each time; add-ons are checked each opening

Albert Aftoora replied
Albert Aftoora

Since installing V.22, every time I open Firefox, the "checking add-ons for compatibility" runs, and the new Introduction page opens. I'm running Windows 7 Pro.

Since installing V.22, every time I open Firefox, the "checking add-ons for compatibility" runs, and the new Introduction page opens. I'm running Windows 7 Pro.

所有回覆 (2)

You can check for problems with preferences and rename or delete the prefs.js file and possible numbered prefs-##.js files and a possible user.js file to reset all prefs to the default value.


Code changes regarding HiDPI support have landed in Firefox 22 and later (bug #844604).

You can modify the layout.css.devPixelsPerPx and increase or decrease the value in 0.1 or 0.05 steps to adjust the size of fonts and other elements in Firefox.

  • The layout.css.devPixelsPerPx pref is a String value parsed to a float and allows to fine tune the dimensions of all elements (user interface and web pages) more precisely (resolution 0.1 or 0.05).
  • Change the default value -1 to 1 to make it work like in previous Firefox versions (100%)
  • Use values between 0.05 and 1.0 to reduce elements in size.
  • Use values greater than 1.0 to magnify and make elements larger (percentage divided by DPI, % / DPI).
  • http://kb.mozillazine.org/about:config

If web pages needs to be adjusted after changing this pref then you can look at the Default FullZoom Level or NoSquint extension.

Use this extension to adjust the font size for the user interface:

由 cor-el 於 修改

選擇的解決方法

Thanks cor-el, That solved the font problem! I uninstalled and reinstalled Firefox and that solved the recurring Intro page and the Add-on scanning problems.