Firefox automatically uses settings that work best with your computer. You can modify these settings in your Firefox OptionsPreferences page. Click the menu button and select .. In the General panel, go down to the Performance section and uncheck the box next to Use recommended performance settings. You will then be able to change the following settings:
Use hardware acceleration when available: This setting allows Firefox to use your computer's graphics processor, if possible, instead of the main processor, to display graphics-heavy web content such as videos or games. This frees up resources on your computer so it can run other applications, like Firefox, faster. This box is checked by default but the feature isn't available for all graphics processors. You must restart Firefox after changing this setting, before it will take effect.
Firefox is fast on Mac because we don’t track your moves. Firefox version 78 is the last supported Firefox version for Mac users of OS X 10.9 Mavericks, OS X 10.10 Yosemite and OS X 10.11 El Capitan. These users will be moved to the Firefox Extended Support Release (ESR) channel by an application update. Both Firefox and Opera are compatible across every platform including Windows, macOS, Linux, Android and iOS. Firefox account holders can easily sync their bookmarks, passwords, open tabs, and browsing history across all their signed into devices. The same is true for Opera users with an account. Firefox and other browser such as Safari, and Chrome are safe depending on what plugins are installed/enabled and if they are kept up to date. I would also suggest Anti-virus software to help keep you safe. Your Mac needs an anti-virus, and we’ve. With Firefox, you decide what to share online and when, because your life is your business. We designed Firefox with smart browsing features that let you take your privacy, passwords, and bookmarks with you safely wherever you go. PRIVACY CONTROL IN ALL THE RIGHT PLACES Firefox gives you greater privacy protection while you’re on the web.
Content process limit: With Multiprocess Firefox, also called electrolysis or e10s , Firefox runs web content for all tabs separately from the main Firefox process for increased security and performance. Using multiple content processes can further increase performance and minimize the impact of content process crashes. You can modify this setting to increase or decrease the content process limit.
The recommended maximum is four but you can set up to seveneight content processes; however, having too many content processes can slow down your computer, and consequently, Firefox.You can set between one and eight content processes. The default is eight. Having more content processes can improve performance when using multiple tabs but it will also use more memory. You can reduce the number of content processes if your computer is running out of memory.
Firefox version 78 is the last supported Firefox version for Mac users of OS X 10.9 Mavericks, OS X 10.10 Yosemite and OS X 10.11 El Capitan. These users will be moved to the Firefox Extended Support Release (ESR) channel by an application update. This will provide security updates until the next ESR update in July 2021, after which the affected users will no longer receive security updates.
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While Apple does not have a public policy governing security updates for older OS X releases, their ongoing practice has been to support the most recent three releases. The last security update applicable to OS X 10.11 was made available in July 2018. Unsupported operating systems do not receive security updates, have known exploits and can be dangerous to use, which makes it difficult to maintain Firefox on those versions.
Up until July 2021, we will be updating affected users with critical security updates through the Firefox ESR channel to help retain the best possible security. After this, no security updates will be provided.
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If you want to keep your Firefox version up to date, you will need to upgrade your operating system to macOS 10.12 or higher. Older versions that are not supported by Apple are unreliable and unsafe to use, which also makes it difficult to maintain Firefox on those versions.