Mozilla Is Working On a Chrome-Like 'Site Isolation' Feature For Firefox

An anonymous reader writes: "The Mozilla Foundation, the organization behind the Firefox browser, is working on adding a new feature to its browser that is similar to the Site Isolation feature that Google rolled out to Chrome users this year," reports Bleeping Computer. "[Chrome's] Site Isolation works by opening a new browser process for any domain/site the user loads in a tab." The feature has been recently rolled out to 99% of the Chrome userbase. "But Chrome won't be the only browser with Site Isolation," adds Bleeping Computer. "Work on a similar feature also began at Mozilla headquarters back in April, in a plan dubbed Project Fission." Mozilla engineers say that before rolling out Project Fission (Site Isolation), they need to optimize Firefox's memory usage first. Work has now started on shaving off 7MB of RAM from each Firefox content process in order to bring down per-process RAM usage to around 10MB, a limit Mozilla deems sustainable for rolling out Site Isolation.