What is Firefox?
Author: Domeny.ForSale editorial team Published
In brief: Firefox is a free web browser developed by Mozilla for opening websites and using online services. It is an alternative to Chrome, Edge or Safari, offering features including tracking protection, extensions and data synchronisation across devices. It is not a search engine — but it lets you use Google, Bing and other search engines.
What is Firefox used for, and how does it differ from a search engine?
A browser is a program that retrieves and displays web pages. In Firefox, you can read the news, watch videos, use online banking, shop or work in web-based applications. The official spelling of the name is “Firefox”, not “FireFox”.
A search engine is a service that helps you find information and websites. When you type a question into Firefox’s address bar, the browser sends it to your chosen search engine. When you enter a specific address, such as example.com, it opens that website.
This distinction matters in practice: changing your browser does not require changing your search engine. You can switch from Chrome to Firefox and still search for information on Google. You can change the default search engine in the browser’s settings.
What features does Firefox offer?
Firefox supports tabs, which let you open several pages in one window, and bookmarks for saving your favourite addresses. It also lets you download files, save passwords and search your browsing history. You do not need to install additional tools for everyday internet use.
Several features are useful for more specific needs:
- Extensions are add-ons that change what the browser can do, such as a password manager or a tool that blocks selected content. Check their permissions and install only those you need.
- Synchronisation through a Mozilla account lets you share selected data, such as bookmarks, passwords and open tabs, across your own devices. An account is not required for ordinary web browsing.
- Reader View simplifies the layout of an article on supported pages, reducing distracting elements.
- Developer tools let you inspect a website’s code and how it works. They are useful for people building websites, but ordinary users do not need to use them.
Firefox is available on computers and mobile devices. Features and add-on support may differ between operating systems, so before switching browsers, check whether the tools you use on your phone are available.
What does Firefox do for privacy, and what does it not provide?
Firefox has built-in tracking protection. It restricts certain mechanisms used to monitor users’ online activity, including some cookies and tracking scripts. Cookies are small pieces of data saved by websites; they can both keep you logged in and be used for tracking.
You can change the level of protection in the settings. However, more restrictive settings may interfere with some websites, for example with login functions or embedded content. If a website stops working, check the protection settings for that particular site rather than immediately disabling protection everywhere.
A private window does not mean anonymity online. It limits the recording of local browsing history and removes private-session data when the session ends, but it does not hide your activity from the service you visit, the network operator or your internet service provider. Downloaded files and bookmarks you create remain on your device.
No browser replaces the need for caution when entering passwords and payment details. Updating the browser, checking website addresses and avoiding suspicious add-ons are still necessary.
Is Firefox worth choosing over Chrome or Edge?
Firefox may be a good choice if you value privacy settings, the ability to customise your browser or an alternative to Chromium-based browsers. Chromium is an open-source project that forms the basis of browsers including Chrome and Edge. Desktop Firefox uses a different engine for displaying web pages, called Gecko.
This does not mean Firefox will always be faster or use less memory. The results depend on your device, the number of tabs, extensions and the websites you visit. Some business applications may also require a particular browser — check the provider’s requirements.
A practical test is simple: use Firefox for a few days for email, video calls, online banking and your most frequently visited websites. Assess whether everything works correctly and whether you find the browser comfortable to use. You do not need to uninstall your current browser to make this comparison.
How can you install Firefox safely and start using it?
On a computer, download the installer from Mozilla’s official website. On a phone, use the official app store and check the publisher. Avoid random sites offering installation files. Confirm current system requirements and available features in Mozilla’s documentation or the app’s store listing.
After installation, you can import bookmarks and other supported data from your old browser. Then choose a search engine, check the privacy settings and make sure updates are enabled. If Firefox works well during your test, set it as your default browser — links from other applications will then open in it.
See also: What is Brave?
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