You should know that your preferences, extensions, and themes will be reset/removed, but since you’re planning on installing Chrome or another browser, I’m willing to bet that’s ok (and you should back your profile up before you do this, just in case).

If you find your Firefox experience is sub-par and a little more pokey than you’d like, you should try resetting your profile before moving over to another product. They just don’t know that surfing the web can be analogous to playing Katamari Damacy, where simply browsing can accumulate cruft until you have this big ball of metadata that slows you down. Many, many people complain of Firefox feeling slow and bloated over time, and in a number of cases, they’re not wrong. Some web page features such as buttons that change when they're clicked or images with zoom capabilities may not work properly while others may not work at all.One of the best features in Firefox is one of its least-known. If you have JavaScript disabled, most of what makes these websites work won't load in your Firefox browser. The use of JavaScript on your Firefox browser is virtually crucial because it enables the best use of modern websites such as Gmail, Facebook, YouTube, and more. What happens if I disable JavaScript on Mozilla Firefox? If the 'javascript.enabled' is set to 'true,' then your JavaScript is working correctly. Type in 'javascript' into this search bar. As you type this, every JavaScript-based setting appear. On clicking the 'Accept the Risk and Continue' button, a search feature will appear. To do that, simply input 'about:config' into the Address Bar of your Firefox browser and press the Enter key on your keyboard. Next, accept the warning about changing advanced settings by clicking the 'I'll be careful, I promise' button. On Mozilla Firefox, JavaScript is enabled by default, but you can check it reasonably quickly to verify if it is working correctly. How do I know if JavaScript is working on Mozilla Firefox? In fact, it should only take you only a minute or so to complete. Enabling JavaScript in your Firefox browser is an easy process. It powers most of the dynamic features you see on web pages, including button clicks, navigations, and form submissions. JavaScript is a popular programming language that's essential for modern websites to function correctly on Mozilla Firefox.

Why do I need JavaScript enabled on Mozilla Firefox?

How to reset mozilla firefox browser