Category Archives: Firefox

How to disable “YouTube.com is now fullscreen. Press Esc at any time to exit” message in Firefox

When you are watching a YouTube video in Mozilla Firefox, every time you switch to fullscreen mode, the browser shows the following message: YouTube.com is now fullscreen. Press Esc at any time to exit. If you are not happy to see this message, here is how to disable it.
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Restore old Preferences dialog in Firefox 38

With version 38, Mozilla is going enable a new Preferences feature by default. These new Preferences will be shown inside a tab, like a regular web page. Users who are not happy with the new appearance of Preferences in Firefox 38 can follow this tutorial to disable it and restore the old Preferences dialog.
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The full list of Firefox about: commands

In our articles, we often mention the about:config command which can be entered in the address bar. That command opens the built-in configuration editor of the Firefox browser and allows performing extreme fine-tuning of the browser. It contains lots of options which are not accessible from the browser's settings interface. Many Firefox users are not even aware that about:config is not the only about: command available in the browser. Firefox comes with a huge set of useful about commands which I would like to share with you today.
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Add private tabs instead of private windows in Firefox

The classic Opera browser had a very useful feature - private tabs. Unlike all modern mainstream browsers, it allowed you to mix private and regular tabs in the single window. Firefox users can get the same feature and use private tabs instead of private windows. Follow the instructions below to learn how it can be done.
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Mozilla adds Safe Mode button to Troubleshooting page in Firefox

Recently, we covered how to start Mozilla Firefox in Safe mode. In the safe mode of Mozilla Firefox, addons and plugins will not be loaded, so it is very useful for troubleshooting issues with plugins and add-ons which affect the browser performance, stability or prevent it from being started. Mozilla developers decided to add an additional way to launch Firefox in safe mode.
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Run different Firefox versions simultaneously

The popular Firefox browser is available in many different editions. Every edition has its own release channel and has different features, stability, target audience and OS and add-on compatibility. While it is possible to install different Firefox versions in one OS, they all try to use the default browser profile, as a result of which they can't run simultaneously. This lead to crashes, profile corruption and inconveniences.
In this article, we will see which versions of Firefox are available and how to run them simultaneously.
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