There is a lot of useful information about Firefox hidden away behind the about: URL protocol. The most useful is the URL about:config, which displays preferences and settings that can be inspected and changed.
Jul 10, 2017 · Firefox’s about:config page actually stores every Firefox setting, including settings that can be configured in the graphical interface and settings for your installed extensions. Unbolded settings are the default settings, while bolded settings have been changed. However, you’ll also find interesting hidden settings buried in here. Firefox RR 19.x changed the default viewer for Adobe PDF files to use the internal Firefox viewer. This change is now in the ESR version as of 24.x, and the setting (on Windows) is changed to use the internal Firefox viewer when upgrading from 17.x, even if an external viewer had already been configured. Apr 01, 2018 · More than 1000+ configurations settings are available at the Firefox about page that provides a way to inspect and change Firefox preferences and settings. about:crashes This Firefox about command will list all the crash reports of the Firefox during the runtime; if the user has enabled the crash reporter. Download Mozilla Firefox, a free Web browser. Firefox is created by a global non-profit dedicated to putting individuals in control online. Get Firefox for Windows, macOS, Linux, Android and iOS today! Apr 03, 2017 · Other options are available in Firefox’s Options window. Click menu > Options to open it. When you type in Firefox’s search box, Firefox sends your keystrokes as you’re typing to your search engine—Yahoo by default. Your search engine shows you suggested searches in the box as you’re typing.
Dec 22, 2019 · Firefox has one of the best reset options in the business, clearing out clutter (junk data, bad extensions, misconfigured settings) without touching personal info like bookmarks and passwords. It
To access proxy settings in Mozilla Firefox, click on Firefox’s menu and go to Options. Click the “Advanced” icon at the left side of the Preferences window, click the “Network” tab at the top of the window, and then click the “Settings” button under Connection. Command-line Options¶ The full installer provides a number of options that can be used either from the GUI or from the command line. The following command line options are accepted. The list is valid for Firefox 62 and later. Oct 14, 2019 · Firefox also has an option to request that websites “do not track” you online. This is simply an HTTP header field that you can easily enable. However, the key word here is request, because this is not actually blocking anything. We have also learned that many websites simply ignore these requests.
Command-line Options¶ The full installer provides a number of options that can be used either from the GUI or from the command line. The following command line options are accepted. The list is valid for Firefox 62 and later.
The Options/Preferences panels give you access to Firefox settings. This article describes what types of settings are available in each panel. Connection settings in Firefox Your organization or Internet Service Provider may offer or require you to use a proxy to connect to the Internet.