uBlock Origin allows you to hide ads on websites.Some extensions allow you to block such unnecessary content for example: See the Set Adobe Flash to 'click to play' on Firefox article for details.
To prevent automatic loading of unwanted Flash content, use the 'Ask to Activate' setting in the Add-ons Manager Plugins panel. Many web pages have content you don't really need that uses memory to display.
In Safe Mode, extensions and themes are disabled, so if you notice a significant improvement, you can try disabling or uninstalling extensions. To determine if an extension or theme is causing Firefox to use too much memory, start Firefox in Safe Mode and observe its memory usage. Extensions and themes Disabling memory consuming extensions and themesĮxtensions and themes can cause Firefox to use more memory than it normally would.
The latest Firefox version includes improvements about memory usage.
