I don't want to:

  • install anything (e.g toolbar)
  • type too much

Basically something that would show the SO or SF favicon and do a google site:stackoverflow.com search would be just fine - but I haven't found it

  • It may not be enabled by default in later versions of Firefox(?). Enable it by the hamburger menu (upper right) → More toolsCustomize toolbar... → drag "Search" onto the toolbar. (In any case, the search box is not need. A bookmark with a single letter "keyword" and %s substitution sequence works just fine. E.g. "URL" https://duckduckgo.com/html/?q=site%3Astackoverflow.com+%s for searching on Stack Overflow with DuckDuckGo. There must be a solid reference somewhere on Super User.) Commented Sep 8, 2021 at 21:18
  • Example (but not a canonical): Firefox bookmark with wildcard and keyword Commented Sep 8, 2021 at 21:25

6 Answers 6


You can use Mycroft Project to find a search engine for Firefox

Today I was able to find 2 engines, one written by Alessandro Gentilini and labelled "Stack Overflow" and the other one written by Kalevi Onni and labelled "Stack Overflow (3rd Party - Google)".

I tried the first one and it is working just fine!

There is one for serverfault.com and another one for superuser.com both written by Soon Van and both functional.

  • The ones for serverfault.com and superuser.com do not use google as I was requesting, but the other one does. I'm sure this wasn't there when I wrote the question, but now it is and you win!
    – Davide
    Commented Nov 18, 2009 at 15:07

This already exists and is served up by every site in the trilogy.

View source and look for

<link rel="search" type="application/opensearchdescription+xml" 
      title="Meta Stack Overflow" href="http://sstatic.net/mso/opensearch.xml">

Just use the little drop-down menu in the search bar next to the address bar on most browsers.

enter image description here

(It is a bit different in Google Chrome as Chrome has only one unified address bar, as Semi points out in his answer)

Alternately going to


Look for "search {site} with.." where you can type and press enter to use an alternative search engine:

enter image description here


I did this back in March of 2009:

<searchplugin xmlns="http://www.mozilla.org/2006/browser/search/">
 <shortname>Stack Overflow</shortname>
 <description>Stack Overflow Google Search</description>
 <img height="16" width="16" />data:image/x-icon;base64,R0lGODlhEAAQAMQAAGZmZu6+gNhWI+aeQfvv35lmM8+4oOB4T/fd0+CGEbuZd9bCrf///+HClvPPoOSWMbSPaeWObOiae9thMvro4vffwOTWyequYPj18f337/XXsOimUAAAAAAAAAAAAAAAACH5BAAHAP8ALAAAAAAQABAAAAVhICOOYjYJCKmSkjBRaxwJRxZXzpgdQhRviYdGRDlJVoRLIjgsTmyrTOARrCBSJMPCgmEQNINNrEAmKwyNSsyggJTJKgBAhbEsDAy5SC/v9/NzgIB+fIF6MXuGhIuHjIwMIQA7</img>
 <url template="http://www.google.com/search" method="GET" type="text/html">
     <param value="site:stackoverflow.com {searchTerms}" name="q" />
     <param value="utf-8" name="ie" />
     <param value="utf-8" name="oe" />
     <param value="t"name="aq" />

enter image description here

  • This needs more upvote love. It is the right answer; and easily modifiable to any of the Trilogy, Meta and/or the StackExchange sites!
    – John Rudy
    Commented Oct 30, 2009 at 2:43
  • I would upvote immediately and delete my own answer in favor to this one. But I can't get it running. Well, it's a complicated task anyway: Create file, copy, past, save. Feeling like an idiot... Commented Oct 30, 2009 at 6:46
  • +1 It works! Seems to have been an issue with a missing blank between the attributes in the 4th Param node. I'm going to delete my answer because this is, what the OP was asking for. Commented Oct 30, 2009 at 9:27
  • @The Chairman I think I may be the idiot, seeing as how I managed to mangle my own XML while copying it into my blog ;) fixed the space in the snippet - cheers!
    – Rex M
    Commented Nov 1, 2009 at 16:37
  • is your site currently down? Commented Sep 22, 2011 at 16:50
  • @RexM The link is broken now. Where I can find your search provider? Commented Mar 11, 2014 at 12:00
  • @AlexandrAbakumov I put the snippet in the post. I am not sure if this even works anymore - it's 5 years old.
    – Rex M
    Commented Mar 11, 2014 at 13:53

I would like to add that for any Google Chrome users reading this, just do this:

  1. Search for anything in the stackoverflow search. Chrome will automatically learn that it is a search.
  2. In the address bar, start typing "stackoverflow" until it completes to "stackoverflow.com/", Hit tab, and now the address bar should say "Search stackoverflow.com:" in light blue. Now just type your search terms after that and hit enter.
  • Thanks! I would up-vote this but I don't have the rep. Commented Nov 1, 2009 at 17:08

In Firefox, right-click on the search box and select 'Add a K eyword for this Search...'.

Then in your address bar you can go something like:

o <search string here>

Presuming you set the keyword to o for SO, of course :)

I do this with several custom search fields inside Firefox.

  • About same operation for Opera, right-click, "Create Search...", and here I have so, su, sf as search keywords ;)
    – Gnoupi
    Commented Nov 9, 2009 at 20:51
  • In firefox 3.0.15 (linux) there isn't any Add a _K_eyword for this Search... either in the right-click or left-click menu
    – Davide
    Commented Nov 18, 2009 at 15:03
  • I did this on Windows with FF 3.5
    – warren
    Commented Nov 18, 2009 at 15:18
  • and the 'K' should be underlined there
    – warren
    Commented Nov 18, 2009 at 15:19
  • In Firefox 10,11 (perhaps few versions earlier) you need to right-click in the search text box on the stackoverflow page and select "Add Keyword to this Search..."
    – Maks
    Commented Mar 18, 2012 at 23:57

This functionality was added in Firefox 83

Firefox support: Add search engines, then you can tab-search like on Chrome.

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