Not bad, but far to be as great as was tab suspender, from the same author. Clicking a discarded tab will auto undiscard it, which is a major drawback compared to tab suspender which had an option to prevent that. No more toolbar icon to get the suspend menu options. And more annoying : discarding a tab will get you switched to another tab, but without any options to control this behavior. On the pro side : from what I notice, this extension is more effective than tab suspender in terms of perfs and memory reduction usage.