Robots.txt & Duplicate Content
-
In reviewing my crawl results I have 5666 pages of duplicate content. I believe this is because many of the indexed pages are just different ways to get to the same content. There is one primary culprit. It's a series of URL's related to CatalogSearch - for example; http://www.careerbags.com/catalogsearch/result/index/?q=Mobile
I have 10074 of those links indexed according to my MOZ crawl. Of those 5349 are tagged as duplicate content. Another 4725 are not.
Here are some additional sample links:
http://www.careerbags.com/catalogsearch/result/index/?dir=desc&order=relevance&p=2&q=Amy
http://www.careerbags.com/catalogsearch/result/index/?color=28&q=bellemonde
http://www.careerbags.com/catalogsearch/result/index/?cat=9&color=241&dir=asc&order=relevance&q=baggalliniAll of these links are just different ways of searching through our product catalog. My question is should we disallow - catalogsearch via the robots file? Are these links doing more harm than good?
-
For product pages, I would canonical the page with the most descriptive URL.
For category pages, I agree with you, I would noindex them.
I think I just answered my own question!!
-
Oke, the question concerning rel="canonical" is which URL becomes the canonical version? Since there is no page on the website which would be appropiate (as far as i've seen) i recommended the meta robots tag.
I do agree that rel="canonical" is the preferred option, but in this situation i can't see a way to implement it properly. Which page would you highlight as the canonical?
-
I agree entirely that "Search result pages are too varied to be included in the index".
That said, my understanding is that if you canonical a page, it doesn't get indexed. So we wouldn't have to worry about the appearance / user-friendliness of the URL. But (again, in my opinion) we should still worry about link equity being passed, and that won't happen if you noindex.
This gets complicated fast. I like your solution b/c it's a lot cleaner and easier to implement. Still not convinced it's the "best" way to go though.
-
Where is the evidence that these work? I have never seen them work. Google totally ignores the URL parameters tools in GWTs.
-
I do agree that a rel="canonical" is good option for the problem that's at hand.
As jeremy has stated however the link we are referring to in the href section redirects to the home page. http://www.careerbags.com/catalogsearch/result/index/In my original answer i did not test this. I assumed there would be a list of all products here not filtered by search results. Since this is not the case and this page in fact does not exist it's hard to point at a url to be canonical.
Therefor i changed my answer to include the robots meta tag. This would indeed remove the search pages from the search index. I do think this is a positive thing though.
Look at the following url: http://www.careerbags.com/catalogsearch/result/?q=rolling+laptop+bags
Not really the type of URL i would click on in the search results. The following URL however is something i would want to click on: http://www.careerbags.com/laptop-bags/women-s/rolling-laptop-bags.html
Search result pages are too varied to be included in the index to my opinion.
Hope you agree with this, if not then i would like to hear your thoughts on this.
-
Simon, Wesley, Michael...
These customer facing search result pages are the ones often bookmarked and shared by site visitors. How worried does one need to be about losing link equity? I realize every site is going to be different and social shares don't have link equity - at least for now - but this could add up over time. The rel canonical will enable capture of link equity whereas the robots noindex will not.
Am I over thinking this?
-
In this case you could add the meta robots tag on the search result pages like this:
content="noindex, follow">
Search results can indeed spawn an infinite amount of different URL's. This can be avoided by making sure they are not included in the index but are followed.
-
Webmaster guidelines specifically request that you prevent crawling of search results pages using a robots.txt file. The relevant section reads: "Use robots.txt to prevent crawling of search results pages or other auto-generated pages that don't add much value for users coming from search engines."
-
There are 2 distinct possible issues here
1. Search results are creating duplicate content
2. Search results are creating lots of thin content
You want to give the user every possibility of finding your products, but you don't want those search results indexed because you should already have your source product page indexed and aiming to rank well. If not see last paragraph.
I slightly misread your post and took the URLs to be purely filtered. You should add disallow /catalogsearch to your robots.txt and if any are indexed you can remove the directory in Webmaster Tools > Google Index > Remove URLs > Reason: Remove Directory. This from Google - http://www.mattcutts.com/blog/search-results-in-search-results/
If your site has any other parameters not in that directory you can add them in Webmaster Tools > Crawl > URL Parameters > Let Googlebot Decide. Google will understand they are not the main URLs and treat them accordingly.
As a side issue with your search results it would be a good idea to analyse them in Analytics. You might find you have a trend, maybe something searched for or not the perfect match for the returned result, where you can create new more targeted content.
-
I'm not sure this is the right approach. The catalog search is based on the search box on the website. The query parameter can be anything the customer enters. Are you suggesting that the backend code be modified to always return the in every result?
And why that page because that URL just redirects to the home page because there is no query parameter provided for the search.
In terms o losing link equity, how much equity do they have it they are duplicate content?
-
Hi Jeremy.
Yours is a common problem. The best way to deal with it is, as Wesley mentions, by putting canonical tags on all the duplicate pages - the one you want indexed and to show up in search results AND all the others that you can arrive at via catalog search or any other means of navigation.
Michael's suggestion will prevent the duplicate pages from getting indexed by Google. Unfortunately you lose any link equity going that route, so I'd suggest starting with canonical tags first.
-
To back up the detail Wesley gave you, you can also add URL parameters in Google Webmaster Tools
-
You could add a canonical tag to link to the default page. This way Google will know that it should only index that.
The code for this would be:This should be placed in the section of your HTML code.
Some more resources on the subject:
Got a burning SEO question?
Subscribe to Moz Pro to gain full access to Q&A, answer questions, and ask your own.
Browse Questions
Explore more categories
-
Moz Tools
Chat with the community about the Moz tools.
-
SEO Tactics
Discuss the SEO process with fellow marketers
-
Community
Discuss industry events, jobs, and news!
-
Digital Marketing
Chat about tactics outside of SEO
-
Research & Trends
Dive into research and trends in the search industry.
-
Support
Connect on product support and feature requests.
Related Questions
-
Robots.txt advice
Hey Guys, Have you ever seen coding like this in a robots.txt, I have never seen a noindex rule in a robots.txt file before - have you? user-agent: AhrefsBot User-agent: trovitBot
Intermediate & Advanced SEO | | eLab_London
User-agent: Nutch
User-agent: Baiduspider
Disallow: / User-agent: *
Disallow: /WebServices/
Disallow: /*?notfound=
Disallow: /?list=
Noindex: /?*list=
Noindex: /local/
Disallow: /local/
Noindex: /handle/
Disallow: /handle/
Noindex: /Handle/
Disallow: /Handle/
Noindex: /localsites/
Disallow: /localsites/
Noindex: /search/
Disallow: /search/
Noindex: /Search/
Disallow: /Search/
Disallow: ? I have never seen a noindex rule in a robots.txt file before - have you?
Any pointers?0 -
Duplicate content on product pages
Hi, We are considering the impact when you want to deliver content directly on the product pages. If the products were manufactured in a specific way and its the same process across 100 other products you might want to tell your readers about it. If you were to believe the product page was the best place to deliver this information for your readers then you could potentially be creating mass content duplication. Especially as the storytelling of the product could equate to 60% of the page content this could really flag as duplication. Our options would appear to be:1. Instead add the content as a link on each product page to one centralised URL and risk taking users away from the product page (not going to help with conversion rate or designers plans)2. Put the content behind some javascript which requires interaction hopefully deterring the search engine from crawling the content (doesn't fit the designers plans & users have to interact which is a big ask)3. Assign one product as a canonical and risk the other products not appearing in search for relevant searches4. Leave the copy as crawlable and risk being marked down or de-indexed for duplicated contentIts seems the search engines do not offer a way for us to serve this great content to our readers with out being at risk of going against guidelines or the search engines not being able to crawl it.How would you suggest a site should go about this for optimal results?
Intermediate & Advanced SEO | | FashionLux2 -
No-index pages with duplicate content?
Hello, I have an e-commerce website selling about 20 000 different products. For the most used of those products, I created unique high quality content. The content has been written by a professional player that describes how and why those are useful which is of huge interest to buyers. It would cost too much to write that high quality content for 20 000 different products, but we still have to sell them. Therefore, our idea was to no-index the products that only have the same copy-paste descriptions all other websites have. Do you think it's better to do that or to just let everything indexed normally since we might get search traffic from those pages? Thanks a lot for your help!
Intermediate & Advanced SEO | | EndeR-0 -
Best practice with duplicate content. Cd
Our website has recently been updated, now it seems that all of our products pages look like this cdnorigin.companyname.com/catagory/product Google is showing these pages within the search. rather then companyname.com/catagory/product Each product page does have a canaonacal tag on that points to the cdnorigin page. Is this best practice? i dont think that cdnorigin.companyname etc looks very goon in the search. is there any reason why my designer would set the canonical tags up this way?
Intermediate & Advanced SEO | | Alexogilvie0 -
Can videos be considered duplicate content?
I have a page that ranks 5 and to get a rich snippet I'm thinking of adding a relevant video to the page. Thing is, the video is already on another page which ranks for this keyword... but only at position 20. As it happens the page the video is on is the more important page for other keywords, so I won't remove it. Will having the same video on two pages be considered a duplicate?
Intermediate & Advanced SEO | | Brocberry0 -
Bi-Lingual Site: Lack of Translated Content & Duplicate Content
One of our clients has a blog with an English and Spanish version of every blog post. It's in WordPress and we're using the Q-Translate plugin. The problem is that my company is publishing blog posts in English only. The client is then responsible for having the piece translated, at which point we can add the translation to the blog. So the process is working like this: We add the post in English. We literally copy the exact same English content to the Spanish version, to serve as a placeholder until it's translated by the client. (*Question on this below) We give the Spanish page a placeholder title tag, so at least the title tags will not be duplicate in the mean time. We publish. Two pages go live with the exact same content and different title tags. A week or more later, we get the translated version of the post, and add that as the Spanish version, updating the content, links, and meta data. Our posts typically get indexed very quickly, so I'm worried that this is creating a duplicate content issue. What do you think? What we're noticing is that growth in search traffic is much flatter than it usually is after the first month of a new client blog. I'm looking for any suggestions and advice to make this process more successful for the client. *Would it be better to leave the Spanish page blank? Or add a sentence like: "This post is only available in English" with a link to the English version? Additionally, if you know of a relatively inexpensive but high-quality translation service that can turn these translations around quicker than my client can, I would love to hear about it. Thanks! David
Intermediate & Advanced SEO | | djreich0 -
Robots.txt unblock
I'm currently having trouble with what appears to be a cached version of robots.txt. I'm being told via errors in my Google sitemap account that I'm denying Googlebot access to the entire site. I uploaded clean and "Allow" robots.txt yesterday, but receive the same error. I've tried "Fetch as Googlebot" on the index and other pages, but still the error. Here is the latest: | Denied by robots.txt |
Intermediate & Advanced SEO | | Elchanan
| 11/9/11 10:56 AM | As I said, there in not blocking on the robots.txt for 24 hours. HELP!0 -
ECommerce syndication & duplicate content
We have an eCommerce website with original software products. We want to syndicate our content to partner and affiliate websites, but are worried about the effect of duplicate content all over the web. Note that this is a relatively high profile project, where thousands of sites will be listing hundreds of our products, with the exact same name, description, tags, etc. We read the wonderful and relevant post by Kate Morris on this topic (here: http://mz.cm/nXho02) and we realize the duplicate content is never the best option. Some concrete questions we're trying to figure out: 1. Are we risking penalties of any sort? 2. We can potentially get tens of thousands of links from this concept, all with duplicate content around them, but from PR3-6 sites, some with lots of authority. What will affect our site more - the quantity of mediocre links (good) or the duplicate content around them (bad)? 3. Should we sacrifice SEO for a good business idea?
Intermediate & Advanced SEO | | erangalp0