// ITS FOSS — LINUX & OPEN SOURCE
Firefox Can Do All This? 21 Features Most Users Never Touch
Firefox is my daily driver, my main browser. I have been using it for years and I also pay attention to the features it adds with new releases.
I find it surprising that many people use it just for browsing websites but not utilizing many other features it offers. Trust me, you will be surprised by just how much power and convenience is packed into this browser beyond simple web surfing.
From clever productivity hacks to handy built-in tools, it is packed with features that can help enhance your online experience. You don't need to visit third-party websites for several day-to-day tasks.
Let me share these "lesser known" (if I may call that) features of my favorite open source browser.
For a long time, the lack of a native split-screen viewing mode was a notable gap in Firefox's feature set. However, modern ultrawide monitor users can now view two tabs simultaneously side-by-side without needing to arrange separate OS windows.
While the feature is currently limited to splitting two tabs at once, rather than tiling multiple layouts, the implementation is clean and works exactly as intended.
To use it, simply hold CTRL key and click on the two tab titles you want to view together. Right-click either of the selected tabs, and choose Open in Split View from the context menu.
Once active, you can easily swap their positions or resize the dividing line to allocate more screen real estate to a specific page.
Firefox offers more than just viewing PDF files. It allows annotating PDF documents with tools such as adding highlights, hand-drawings and texts. The browser also enables signing PDF documents and inserting images within PDF files.
One of its most interesting features is merging multiple PDF documents directly within the application. To do this, navigate to the Pages view, click on the Plus button to select additional PDF files.