This article describes how to customize the way you see websites by choosing font styles and colors that will override those used by the websites.
Your organization or Internet Service Provider may offer or require you to use a proxy to connect to the Internet. Learn more.
Options/Preferences panels give you access to Firefox settings. This article describes what types of settings are available in each panel.
Learn what pop-up windows are and what settings Firefox has for blocking or allowing them.
Learn how to change the email program that Firefox opens when you click a "mailto" link or use the "Email link" and "Email Image" features.
How to disable the Enterprise Roots preference to fix TLS connection errors caused by antivirus software, without compromising security.
There are special situations where a browsing session may be lost. This article will show you how to recover your lost session.