Mon 20 Oct 2008
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Anchor Text Optimisation
As a seo I wanted to know – how many words or characters does Google count in a link? What’s best practice when creating links – internal, or external? What is the optimal length of a HTML link?
It appears the answer to the question ‘how many words in a text link” is 55 characters, about 8-10 words.
Why is this important to know?
- You get to understand how many words Google will count as part of a link
- You can see why you should keep titles to a maximum amount of characters
- You can see why your domain name should be short and why urls should be snappy
- You can see why you should rewrite your urls (SEF)
- It’s especially useful especially when thinking about linking internally, via body text on a page.
I wanted to see how many words Google will count in one ‘link’ to pass on anchor text power to a another page so I did a test a bit like this one below;
- pointed some nonsense words in one massive link, 50 words long, at the home page of a ‘trusted’ site
- each of the nonsense words were 6 characters long
- Then I did a search for something generic that the site would rank no1 for, and added the nonsense words to the search, so that the famous “This word only appear in links to the site” (paraphrase) kicked in
- This I surmised would let me see how many of the nonsense words Google would attribute to the target page from the massive 50 word link I tried to get it to swallow.
Using a character calculator tool the answer was…..
- Google counted 8 words in the anchor text link out of a possible 50.
- It seemed to ignore everything else after the 8th word
- 8 words x 6 characters = 48 characters + 7 spaces = a nice round and easy to remember number – 55 Characters.
So, a possible best practice in number of words in an anchor text might be to keep a link under 8 words but importantly under 55 characters because everything after it is ignored (in the link)?
Linkbuilding
This of course has an impact in writing your titles for pieces you want linked to – especially for those with a habit of taking the article title and linking it to the page. Most are aware a title should be under @ 65 characters to have maximum impact in Google. From a test I did, Google ignored words in a title after 75 characters. But if Google only attributes the first 55 characters in a link, does this mean there’s at least a 10-20 character no-man’s land to consider when creating links & headlines?
All the more reason to have important keywords at the beginning of your page title, and your brand name at the very end?
If you like this test, you might like;
- Will Google Rank Pages Better With Valid Code?
- How Many Words Will Google Count In The Title Tag?
- A Google Friendly Website Navigation System
- Do It Yourself Search Engine Optimisation
Addendum
If people used the title of this page to link to this article, which is preferable, (Limit Anchor Text Links Under 55 Characters In Length? (I’ve tweaked this again)) – that’s 54 characters, within measured tolerance. But because of my website URL structure and length, I might be losing out if people link to the article using the URL. (http://www.hobo-web.co.uk/seo-blog/index.php/anchor-text-length/) – unfortunately that’s over 60 characters, with Google *possibly* ignoring the rich keywords at the end of the link
What do you think about this anchor text optimisation observation?



Killer, Shaun. Thanks for the test and the results!
Brian
Thanks Brian. Thought it might be useful to share and get some feedback
[...] El tamaño límite del anchor text no debería sobrepasar 55 caracteres, ya que google sólo lee las primeras 8 palabras, que junto con los espacios hacen un total de 55 caracteres. No me lo había planteado hasta hoy cuando he leído el blog de hobo… [...]
Sounds like a bug
Thanks for publishing the test results!
I always like to front load my titles with the keywords and this just justifies it a little more. Thanks for the info.
Thanks Ann
Other people may have different thoughts and findings – hope they share
@Brent thanks for the comment. I like to keep it natural as possible, but by keeping keywords within the first 55 characters, it may be you are ensuring anchor text power in a link
Keep anchor text links under 55 characters http://tinyurl.com/5a2kqm
[...] Keep Anchor Text Links Under 55 Characters In Length? [...]
[...] How Many Words In A Link For Google? A test about anchor text – it seems Google only counts 55 characters in a link. [...]
You’ve performed an interesting test, but it appears you still have more questions.
That’s usually the case with research. Every answer brings more questions while moving you closer to truth.
Research is important. And Internet marketers who do the most research seem to be the most successful.
Warmly,
Linda P. Morton
That’s part of the fun being a seo – it’s all experimentation
[...]Most are aware a title should be under @ 65 characters, but what about the best size for a link [...]
[...] This of course has an impact in writing your titles for pieces you want linked to – especially for those with a habit of taking the article title and linking it to the page. [...]
Great test, but I don’t think this to be true, personally – although I am always interested in the tests of others and appreciate your thoughts on this topic!
First, Google reports link text in GWT that is much longer than 55 characters. Also, I have seen that if the keywords are contained somewhere in your page, they will show more than 55 characters of text in the ‘cached’ version that you are referring to.
They may truncate the text for ‘links pointing at this page’, but I doubt that this means they ‘ignore’ the other characters.
Good comment Mark. It’s always worth remembering nobody knows what Google is doing. Kinds of reminds me of the age-old meta description arguments about what Google reads and what it counts when ranking sites
I wanted to see if I could test something it in the wild – these are simply the results I got from that individual test.
Its always worth remembering there is probably a cut off point for what Google counts as a link – why not 55 characters?
Might be an anti-spam measure, too.
Agreed, I guess the only way to tell is to keep on testing
Cheers
You are right. The most important keywords need to be at the beginning of the link. I typically will have about five words in the anchor text of which four are important.
However in the future Google may expand from 55 chars to 100; so long links are not a bad idea, just make sure to have the most important keys at the front.
[...] Ever wonder how many words or characters Google reads in the anchor text of a link? This person did. It appears the answer to the question ‘how many words in a text link” is 55 characters [...]
Great test Shaun, that’s what I love about Hobo – your not afraid to test and share.
Thanks Paul. In cases like this I think this sort of test can help anyone, and hurt no-one, so I blab about it.
Another great article, 5 star, that’s what internet is for – the sharing of information
Hello Shaun,
This is great to have an idea of what I need to do. I just wish I had know this a long time ago.
I am usually a fanatic about keeping things short but, now I have a number to keep in mind (give or take a few).
Thank you again!
Thanks for the comment Sheryl
[...] Shaun Anderson shows why it might be better to keep your anchor text under 55 characters [...]
[...] gente de Hobo-Web han comprobado que el máximo de caracteres en el “Anchor Text” de un enlace, es de 55 [...]
I’ve heard some goody things about this blog. Remember to balance the pics with the text tho. cheers!
[...] Categorizado en Sobre SEO – How many words or characters in a link [...]
「Googleは、アンカーテキストの何文字目までを、そ て何番目までの単語をカウントするのか」、
HoboブログのShaun氏が、実験を通して調査しました。
Keyword stuffing in anchor text is another point that can often get overlooked by web designers or search marketers. Search engines are smart enough to pick up repetions in anchor text as much as in standard on page text. Often while we are careful to ensure there is no keyword stuffing in main body text and that the content flows as regular language; you will be surprised to see how many times the keywords are repeated within the anchor text. Whilst it is perfectly OK and an effective SEO technique to use most desired keywords within the anchor and title for links and images; it is improtant to ensure slight variations as opposed to simply repeating the exact phrases.
[...] much the same method as my recent seo test where I tested how many words you should put in a link, I relied on the “These terms only appear in links pointing to this page” (when you [...]
[...] Maximale grootte anchorteksten Ik lees zojuist een leuk onderzoekje over de maximale grootte van anchor teksten, d.w.z. de tekst in de hyperlinks. Zoals we weten zijn de anchorteksten in de verwijzingen naar onze websites Voor Google zeer bepalend bij de vraag waar de website eigenlijk over gaat. De vraag in het onderzoek was hoeveel karakters Google nu precies maximaal meeneemt. Het antwoord blijkt: 55 karakters (ongeveer 8 woorden). Dat is eigenlijk best veel. Hier zijn de details van het onderzoek te lezen: Keep Anchor Text Links Under 55 Characters In Length? | Hobo [...]
It is an important point you make to place the more important key phrases/terms earlier in the link, however to place an actual number on what Google cuts at is unrealistic from this test.
A dozen (200+ possibly) other variables may effect this, some possibilities I can think of on the spur of the moment are page length, word relevance (random character strings are not going to seem very relevant), main-text length, link length of all links on page, link length of all links to the target page, etc.
Thanks for the test-results
[...] einem Test hat er nämlich herausgefunden, dass Google in den Anker-Texten von Links maximal 8-10 Wörter mit [...]
[...] Google count in a link? Is there an optimal length for text links? Blogger Shaun Anderson did a test to find the [...]
Awesome test!
Would have taken me forever if ever to come to the conclusion to do the test like that =p
Good Work and thanks for sharing =)
[...] Blogger und SEOs nützliche Tests. Ein wie ich finde äußerst nützlicher Test wurde jetzt von Shaun Anderson in dessen Blog [...]
[...] Google count in a link? Is there an optimal length for text links? Blogger Shaun Anderson did a test to find the [...]
[...] Keep Anchor Text Links Under 55 Characters In Length? [...]
[...] new study suggests that Google reads only the first 55 characters of link text, which means that in the above [...]
@Chris McGiffen – probably why you (and others) should test it too
[...] dazu noch der Hinweis, dass Google wohl nur die ersten 55 Zeichen eines Linktextes wertet. Wenn man nicht gleich ganze Teaser verlinkt, hat man hier selten Probleme. Ärgerlicher [...]
[...] words or characters does Google count in a link? Is there an optimal length for text links? Blogger Shaun Anderson did a test to find the [...]
[...] Limit Anchor Text Links To 55 Characters In Length? – Interessant. [...]
[...] Dürfen Anchor-Texte nur 55 Zeichen lang sein? – interessanter Post [...]
[...] Google count in a link? Is there an optimal length for text links? Blogger Shaun Anderson did a test to find the [...]
Great article. Thanks for sharing.
[...] should be, but since he mentions the safe length is around 8-9 words I’m still in the clear. Click here to read his post on anchor text length. Related PostsLink Building Podcast Intro I’ve been mulling over how to do the link building [...]
Nice test, I was recently thinking about writing an automated unit test suite in Django to run a whole bunch of tests against Google ranking and indexing patterns.
Great post. Keep up the good work hobo-web
[...] todo esto viene a raiz de un interesante artículo publicado en Hobo, que he encontrado en SeoFemenino, que comenta la importancia de escribir un anchor text que no [...]
Too Cool buddy great work
Shaun, if it’s true then do you think Google shall also limit the indexed title of the pages to 55 characters. My research on this showed me my blog has blog post titles more than 55 characters clearly indexed. This is certainly an interesting research at your end, and would like to discuss more on this.
Thanks for the great SEO tip on anchor links. 8-10 words at max, I will remember.
woow this very-very nice tips to get ranking on SERP.
thank’s for this tips shaun
interesting test but after 56 comments about 55 words in anchor link, there is no one can demonstrate the truth of this statement.
so, how can we trust on it?