Release browser resources by suspending the tabs you aren't using
"The Safer Suspender" is a <b>safer</b> and free and open-source extension for modern browser, such as Firefox, Edge and Chrome. Once installed and enabled, this extension will automatically <b>suspend</b> tabs that have not been used for a while, freeing up memory and cpu that the tab was consuming.
Github: https://github.com/valord577/theSaferSuspender/