newest https://addons.mozilla.org/ja/firefox/addon/user-agent-switcher-revived/ User-Agent Switcher ( Linder) Quickly and easily switch between popular user-agent strings.
newest https://addons.mozilla.org/ja/firefox/addon/user-agent-switcher-revived/ User-Agent Switcher ( Linder) Quickly and easily switch between popular user-agent strings.