Hmm, do you mean in Firefox Focus on your iPhone/iPad, or do you mean in Firefox on your Windows XP system? For Firefox Focus, this article mentions an erase button: [[What is Firefox Focus?]] For Firefox on Windows, you can use the "Clear Recent History" command on the History menu. See: [[Delete browsing, search and download history on Firefox]]. '''Please expand the details panel with the checkboxes, and ONLY clear what you really want to remove.''' For example, you might want to retain cookies that keep you logged into sites if you don't remember the passwords. Also, you usually want to keep Site Preferences which includes your site-specific permission decisions (popups allowed, Flash blocked, etc.). ''Note: There is no "undo" for clearing history.'' Do either of those get you the result you want? Please let us know if this answered your question.