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Nibbler, a really good free website test for SEO!

Well if I jumped through several hoops with the SEOquake toolbar, my next SEO tool was about to make me climb Mount Everest. is a free internet tool that tests your website and looks for all the improvements that can be made to it to help you achieve a better ranking in search engine results. There is a large list of tested criteria and if you wanted to be really thorough then you could pay around ยฃ40 for a months worth of more in depth testing from

However it does a rather good job at pointing you in the right direction for free. This is the main tool in my free SEO box of tricks. The list below is a screen shot from the results page of Nibbler after it has finished testing a website.












Itโ€™s a long list and scores various parts of your website on a scale of 0-10, but it gets shorter as you correct the problems it throws your way. It was Nibbler that led me to discover apache’s .htaccess file which I will address in its own article. As you can see from the list it does a pretty good job of leaving no stone unturned.

When the test is complete, on the right hand side of the test results, is a summary of what needs to be done in order for you to achieve that “YES” 10 score. By clicking on “Extra Detail” it shows you where these problems are within the pages it has tested. And then after you have rectified these problems you can go back and test your site again to see if you have got a better score! Its actually quite fun! As I had already started with the SEOquake toolbar I got some reasonable scores, but with Nibblers guidance, yet again, I started to nibble away at the parts of my website that needed correcting.







Code quality was one of the first issues I addressed as it was a low score of around 4. Nibbler awards you badges for various achievements and non achievements, one of them awarded to my site was the Old Hat badge. It was given to me for the use of depreciated tags like <font > and <center > and it instead suggested that I used CSS styling to correct these issues and by this creating semantic HTML pages. While making these corrections I discovered that I could replace the <font > tag with a <span > tag which can be styled inline if necessary, as occasionally I like to change the colour, size and decoration of my fonts inside of a paragraph.






Nibbler also pointed out that, among other things, my website was not optimized for printing by giving me the Ink Waster badge, and in the process of discovering how to optimize my site for print I learnt and added this optimization to my website. You might think that a print CSS would not effect your listing, but apparently a websites accessibility is something search engines take into account.

Amongst so much more (and I could go on and on) Nibbler also discovers how many links there are to your website and lists in part where they are coming from. It also tells you how well connected your website is to social networks, another very important factor in SEO.

Nibbler is still constantly giving me ideas (and work) as to what I can do to advance my websites SEO, and has definitely contributed towards getting a better ranking and more visitors to my website. You can join Nibbler for free and save your website(s) in your own profile, or you can just turn up at the site and enter your URL for testing without becoming a member. Either way it gets 5 stars from me!

*All logos and trademarks used are registered trademarks of their respective owners.

31 Responses

  1. Robert Vance

    This looks like a very neat & powerful tool. I’ve been using SEOPressor to handle my SEO for my WordPress sites but this looks perfect for my other sites. Thanks for the post.

    1. Simon Oliver

      No problem, let me know if there is anything particular you want to find out. FYI – putting a link to your website in the comment is spammy so I removed it.

  2. This is quite cool. im new to SEO and used this to improve my score a little bit. I still notice though that despite having a score of 5/10, if i use something like prchecker to see what my google rank is, i get a rank of N/A which apparently means im unranked, unindexed or banned ! i doubt i’m banned so guess im just not ranked. Any idea how i find out why i get an N/A ranking ? sites been live for couple of weeks but i have another site thats been live for months and also gets N/A.

    1. Hi Steve, I wouldnโ€™t worry to much about ranking on Google. Its not a problem, but what you can do is submit your site with Its quite easy, just sign up for a free account and claim your site. This should help. If i do find out anything interesting about Google ranking I will post here.

  3. Thanks for this post and for your excellent blog. I’m starting a content creation business for the building sector. I’ve been writing content for private clients and content mills for the past year, and I’m realising that in order to take this to the next level, I need to understand SEO, as well. I taught myself to build a website in a week, and I hope I can do this, too! I’ve already claimed my site and am working on improving it.

        1. If your referring to the Nibbler Code result look along to where it says W3 Link click on it and it will take you to W3 validation page where it will tell you what the errors are and where in your webpage they are.

          1. Thanks! That helps. I did discover that, and I’m finding that I can track most them down pretty easily once I’m there. Because the code is distributed into different files, it’s not always super-obvious, though. Now, I’m starting to see how the site is put together. It’s so much easier to use ftp rather than the site’s code editor…

            Anyway, sorry. Geeking out.

    1. Simon Oliver

      I had a look at your site Dee, great that you built it yourself in a week! Hope it all works out, get back to us if you have any SEO questions we could write an article about it!

  4. Hi,
    The SEO scores are very important to get, and if you are not a hobby blogger, then probably you understand making good SEO marks. This article is having a quality to teach others.

    Thanks for sharing information.

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