To find this open, click menu > Options, scroll down to the Performance section on the General tab, uncheck “Use recommended performance settings”, and change the “Content process limit” option. Mozilla calls this a “ just right” number of processes for many Firefox users, and says it makes Firefox use 30% less memory than Chrome.Įven better, you can configure the number of processes Firefox uses if you want more or less on your PC. Instead, Firefox uses a maximum of four processes for web page content by default.

However, Firefox Quantum doesn’t just copy Chrome and open a new process for each tab. With Firefox 54, Firefox used two processes: One for the user interface and one for web pages. And if a web page crashed the browser, everything would go down instead of just a single tab. Firefox used to run everything in a single process, which meant a slow web page could slow down your entire browser interface. Firefox Is Now a Multi-Process Browser (But Still uses Less Memory Than Chrome)įor the first time, Firefox is now a proper multi-process browser as well. In layman’s terms, it’s just newer and faster.įirefox’s developers have also been sprucing up every bit of the browser, trying to eliminate any instances of slowness you might encounter. It can run in parallel across multiple CPU cores to better take advantage of modern multi-core CPUs. In Firefox Quantum, the new Quantum CSS engine, also known as Stylo, is now integrated into Firefox. Mozilla plans on gradually swapping out parts of Firefox’s internals for the newer, faster Servo technology. Firefox should be faster when doing just about everything, from rendering web pages and scrolling around to switching between browser tabs and using the interface.įirefox Quantum integrates technology from Mozilla’s Servo research project, which is written in the Rust programming language. According to Mozilla’s tests, Firefox Quantum is about two times faster than Firefox 52. Let’s start with the good stuff that everyone will love: Firefox is just faster now.

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