Cool idea. Sadly, it appears there are none: https://www.reddit.com/r/firefox/comments/g8hj9f/is_there_a_wildcard_character_for_find_on_page/ However, the feature has been suggested: https://wiki.mozilla.org/Firefox/Feature_Brainstorming:Search_and_Find https://bugzilla.mozilla.org/show_bug.cgi?id=32641 You can use extensions to improve the page search experience, such as ''Regex Search'': https://addons.mozilla.org/en-US/firefox/addon/regexsearch/