I Would like a "close all tabs buttons when Firefox closes" on my android app. I manually have to close 5 or more tabs constantly.
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This is built into Firefox using https://support.mozilla.org/en-US/kb/clear-your-browsing-history-and-other-personal-data
You can also have Firefox close inactive tabs using https://support.mozilla.org/en-US/kb/auto-close-open-tabs-firefox-android