Firefox ships with on-page search capabilities that you can make use of to find text on the page you are on.
To do so tap on F3 or Ctrl-F to open the search form in the browser, enter a keyword or phrase that you are looking for and browse through the results displayed to you.
Update: FindBar Tweak is not compatible with Firefox 57. Use the Firefox add-on Search Multi Tabs instead.
FindBar Tweak is a Firefox add-on that improves the process in numerous ways. You will notice for instance that it displays the find bar on top and not on the bottom anymore. It displays the number of hits in addition to that, and highlights all of them on the scrollbar so that you know exactly where they are located on the page.
You can navigate the page either by continuously using F3 to jump to the next hit or Shift-F3 to jump to the last hit, or by using the back and forward buttons next to the search form on top of the screen.
Those cosmetic changes are however not the only ones. There are a couple that improve the search functionality by a lot. The option to search for a phrase in all tabs of the browser at once is probably one of the coolest features of the extension.
Instead of being limited to the current tab only, you can configure the extension to search for you in all tabs. If you enable the option, you find a link to search in all tabs when you open the find bar, you get a display of all open tabs in all browser windows on the left, and the hits of the select item on the right.
Each tab lists the number of hits for the search, so that you know where it was found on and where it was not. You can easily switch between each tab here without leaving the current page you are on.
What is missing though is an option to jump to that tab right away, as you cannot seem to do so apparently. An option to quickly switch between tabs, or more precisely to a specific result in another tab, would be really useful.
Update: Mozilla has moved the search bar to the top of the web browser in Firefox 25. You can use FindBar Tweak to restore the bar's original position at the bottom. The option is located on the Appearance tab in the preferences.
The options of the extension are very extensive. Here is a list of everything that it provides you with:
If you want more control over Firefox's on-page search feature, then you should take FindBar Tweak for a test ride as it does just that. The find on all pages features is an excellent addition to the browser, even though it is missing an option to open results on other tabs directly.
There are other tweaks that make sense, like highlighting all hits on the scrollbar, auto-closing the bar or using selected text automatically when it gets opened.
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Ghacks is a technology news blog that was founded in 2005 by Martin Brinkmann. It has since then become one of the most popular tech news sites on the Internet with five authors and regular contributions from freelance writers.