FireFox is the most customizable browser I am aware of and hence it is my favorite one. A while ago posting a huge overview of SEO tools I promised to compile a similar list of available FireFox SEO extensions; and so here I am.
Please mind I don’t use all of them (as that’s impossible, I guess) – you can see that in "How often I use it" column – but that doesn’t mean I do not recommend them; it only means I either didn’t need those add-ons or got used to using something else. Besides, some of the extensions listed might fail to work on the latest FireFox version but I still decided to include them as not everyone now uses the latest version.
- Backlink Analysis FireFox Extensions.
- On-page Diagnostics FireFox Extensions.
- FireFox extensions to enhance your searching experience
Backlink Analysis FireFox Extensions.
FireFox extensions to enhance Link Analysis in Yahoo! and Yahoo! SiteExplorer.

| FireFox SEO extension | Function(s) | Data accessed via… | How often I use it |
| yExplore | Quickly access link data by right-click on any URL. | Mouse right click | I don’t currently use it |
| SearchStatus | Quickly access link data of the currently active page. | FireFox status bar | Once a day |
| SEOquake / SEO for Firefox | See SEO information for each Yahoo! and YSE search listing. | Integrated within search results. | Multiple times a day |
| SEO Link Analysis | See link anchor text, link type and linking page Google PR. | Integrated within search results. | Multiple times a day |
FireFox Extensions to Access Other Link Checkers.

| FireFox SEO extension | Function(s) | Additional features | Accessed via… | How often I use it |
| Smart PageRank | Checks backlinks for a current active page. | Allows you to also check for Google PR (often broken), anchor text and nofollow link attribute | Built-in toolbar | I don’t currently use it |
| Inbound Link Quality | Shows the estimated quality of backlinks for an active page. | Shows Dmoz and Yahoo directory presence, number of .edu and .gov backlinks, age and Alexa rank | FireFox status bar | I don’t currently use it |
| Link Diagnosis | Required to get access to the full backlink report at Link Diagnosis site | - | - | Once a week |
On-page Diagnostics FireFox Extensions.
Extensions to Explore Page Outbound Links.

| FireFox SEO extension | Function(s) | Accessed via… | How often I use it |
| Web Developer | Shows any link full address and properties. | Extension toolbar => “Information” => “Display Link Details “ | Multiple times a day |
| Link Evaluator (or a similar one: LinkChecker) | Shows the linking page header status code by color: green – 200 OK , red – not working | FireFox Menu => Tools => Validate links | I don’t currently use it |
| SEOquake / SearchStatus | Highlights / strikes through links using "nofollow" attribute | On a webpage | Multiple times a day |
| SEOQuake SEObar | Explores all internal and external links of a page by fetching Google PR and Yahoo backlinks data | Extension built-in toolbar | Once a day |
FireFox Extensions to Explore Page Source Code

| FireFox SEO extension | Function(s) | How often I use it |
| View Source Chart | Graphically displays source structure. | Once a week |
| JSView 2.0.5 | Displays information on page external files. | I don’t currently use it |
| HighlightAll | Highlights identical elements in the code. | I don’t currently use it |
| Html Validator | Validates HTML of the current page. | Once a week |
| View Formatted Source | Shows source structure. | I don’t currently use it |
| SourceEditor | Allows to edit code and view the results. | Once a day |
| PageDiff | Compares code of several pages. | I don’t currently use it |
| Firebug | Edit, debug, and monitor CSS, HTML, and JavaScript live in any web page. | I don’t currently use it |
| Web Developer | Edit and validate source code. | Multiple times a day |
Other On-page Diagnostics Tools

| FireFox SEO extension | Function(s) | Accessed via… | How often I use it |
| Web Developer |
Analyze a page HTML semantic structure: gives any page outline based on heading tags usage |
Extension toolbar => “Information” => “View Document Outline“ | Multiple times day |
| Analyze page images size and anchor text. | |||
| Live HTTP headers | View all http requests issued by the Web page loaded in the browser. | Right-click => "Page Info" => Headers | Once a week |
| User-agent switcher | Sends the server different information about which user-agent is requesting a file. | FireFox menu => Tools => User-agent switcher | Once a week |
| Page age | Shows the date when Google first found the page. | Right-click => get page age | Once a week |
| Fangs | Creates a page outline based on H1-H6 headings and link anchor text | Right-click => View Fangs (Headings list, Links list) | Once per two weeks |
FireFox Extensions to Enhance Your Searching Experience
FireFox Plugins for Google Search

| FireFox SEO extension | Function(s) | Accessed via… | How often I use it |
| Google de-personalized search | Turns off Google personalized search. | FireFox search plugins | Once a week |
| Google without Wikipedia | Removes wiki results from Google SERPs | FireFox search plugins | I don’t currently use it |
| Number Google Results | Shows numbers for Google SERPs. | Integrated within search results. | Multiple times a day |
| SEOQuake or SEO for FireFox | Shows SEO information (domain age, backlinks, indexed pages, etc) for each Google search listing. | Integrated within search results. | Multiple times a day |
| Webmaster2 for FireFox | Integrates Compete.com rankings and Google PR within search results. | Integrated within search results. | I don’t currently use it |
| Google Global | Allows to view both organic and paid results for 5 different countries (USA, Canada, Ireland, UK and Australia) | Right-click => Search Google Global | I don’t currently use it |
| Google Advanced Search | Allows for a quick access to some Google advanced operators | Google Advanced Search toolbar | I don’t currently use it |
| GooglePreview | Shows page preview within Google results | Integrated within search results. | I don’t currently use it |
| SocialPhile | Access Digg rankings within search results | Integrated within search results. | I don’t currently use it |
| SearchRadar | Integrates related phrases to the search results | Integrated within search results. | I don’t currently use it |
Rank Checking FireFox Extensions

| FireFox SEO extension | Options | Accessed via | How often I use it |
| SEObook rank checker | Checks for Google (and Yahoo) rankings (as well as their local variations); exports results to CSV, easy to access and customize. | FireFox status bar | Once a week |
| SEOMoz Rank Checker button | Saves history your search engine position history. | Bookmarks toolbar | I don’t currently use it |
More resources to SEO your FireFox:
- FireFox for SEOs: Working with Several FireFox Profiles;
- 20+ Must-Have FireFox Search Plugins for SEOs;
- Official directory of FireFox extensions.
Hi Ann
actually the SEO link analysis is not working for me.
It returns this error : document.getElementById(“seschp”) is null
I’m using FF3 on WinXp
@Maing, edited the link, thank you. Please check again.
Thank you Ms Smarty for another great resource.
@Ann Smarty
LOL i mean the extension is not working,not your link :)
In site explorer it returns me document.getElementById(”seschp”) is null error.
Am i the only one with this problem?
@Maing, Actually, it does work with me; I am also using FF3 on WinXp… Will have to hear from other users I guess…
sigh this means that i need to reinstall my OS for the 6th time :(
Have i told you that this is a great article?
Great extensive list! Thanks for making it so easy for us :)
I do also have the problem with document.getElementById(”seschp”) in Yahoo! siteexplore, like Maing does.
And I use FF3 in Windows XP…
coll stuff, ive not used any seo plugins before so ill take a good look, thanks
Great list there!
I have had a list of 10 extensions, but this is a superb one.
Thanks for Posting Useful List of SEO Extension Will Be Really Help Ful.
Great SEO extension but some time generate bugs so far.
A really comprehensive list – now all we need is a list of extensions for Chrome;)
SEO Quake is a truly great plugin for SEO, does most of what you need.
I have been using rank checker as of late and have noticed that the google results have not been all that reliable. I will say it does pick up on the Google local lists, however when it comes to the positioning of true organic results it can be off by quite a margin. It’s results on Yahoo are dead on, for our purposes we don’t really monitor MSN at this point so I can’t speak to that. I have a hunch it is either pulling from the maps results in some instances or perhaps through an API which may not have the same information at it’s disposal. Can anyone else share similar issues, or perhaps shed some light on what I am seeing and why. We also use Advanced web ranking and that seems to be dead on, however the rank checker tool is much more convenient for most rank checking tasks.
Hi Sweeney
I have same issues with rank checker,results are unreliable but maybe it’s because i’m from Italy.
In the options i’ve set to search in google.it but results are very different from real SERPs.
:|
I’m not sure how rank checker works, but if it scrapes google, that’s the answer to the question about reliability. Google is constantly changing page layouts, and has recently gone further than before to discourage automated rank checking. It’s my belief that they now deliberately scramble the results when they believe the useragent (the program making requests to Google) is a robot, not a web browser.
Hey Anne,
This another great post. I only had SEO for Firefox, and SEOQuake for stricly SEO. I also occasionally use a proxy server to hide my IP, something similar to PHP Proxy, as well as WASP – which is a web analytics tool. It allows you to see which analytics tools and what third party ad platforms are on the site you are visiting.
Great Post as usual!
Hey I think you missed SEO ronk …
Good list anyway ^^
All above tools is very useful for SEO.
Ann, I may be late to know this post, I have just found a link at sitepoint and your post is excellence. I never know these one before, I have to try after this comment. Thanks.
Very good list.
I also would like to add few more at
http://www.sprightlymedia.com/kb/firefox-addons.html
Updated seolinkanalysis today to v 1.0.4 … I’m still on FF 2 .. and I’m akso getting document.GetElementById(“seschp”) is undefined JavaScript error too …
I’m submitting a bug report to Joost …
Hi,
For everyone that is having problems with Joost’s seolinkanalysis tool (document.GetElementById(”seschp”) ) – first click yahoo.com (us version of the site) before entering the ‘link:domain’ command. This should sort it.
Hope this helps.
Thanks for Article……
Good Article Writing
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customize google is my fav, but not mentioned
Hey Ann, I know you’re likely very busy so I won’t take much of your time. First thanks for the Firefox Plugin reviews and your comments. I just had to tell you about a brand new, free keyword research tool that Brad Callen just released.
It allows you to browse Google and view the Adwords keywords of ANY Adwords advertiser!
Basically, it’s a small file that gets installed into your web browser (i.e. Firefox).
When you do a Google search, the software automatically places a “view keywords” button
below every single Adwords advertiser.
Click the “view keywords” button and really neat popup window appears that not only shows
you the keywords that any Adwords advertiser is bidding on, but it also shows you a TON of other information, like how much they’re paying per click and so on. It’s awesome.
Anyway, here is the link where you can download the software, and it doesn’t cost anything.
=> http://www.ppcwebspy.com/downloads/?xc2321
Hope you’re having a great week and I’ll talk to you soon.
Malcolm
P.S. Here’s the link where you can get the free Adwords keyword tool again:
=> http://www.ppcwebspy.com/downloads/?xc2321
@Malcolm, I’ll check it out! Thanks a lot!
I have the javascript error too with SEO Link Analysis :( fix doesnt work here on FF3
Cool list. I love using firefox add ons for SEO purpose. but for sometime I don’t get a true PageRank for websites that I visit.
Thanks admin very nice
Its best for SEO peoples. Becoz its saves time and increase capability of work.
Thanks for this wonderful list of plugin. I have already installed three including smartpagerank. I am much interested in knowing the particular URL is nofollow or not. So, i will use smart page rank mainly.
Regards
Krishna
Is the extension disable now .. says so in their website.