Moz Q&A is closed.
After more than 13 years, and tens of thousands of questions, Moz Q&A closed on 12th December 2024. Whilst we’re not completely removing the content - many posts will still be possible to view - we have locked both new posts and new replies. More details here.
Blocking Dynamic URLs with Robots.txt
-
Background:
My e-commerce site uses a lot of layered navigation and sorting links. While this is great for users, it ends up in a lot of URL variations of the same page being crawled by Google. For example, a standard category page:
...which uses a "Price" layered navigation sidebar to filter products based on price also produces the following URLs which link to the same page:
http://www.mysite.com/widgets.html?price=1%2C250
http://www.mysite.com/widgets.html?price=2%2C250
http://www.mysite.com/widgets.html?price=3%2C250
As there are literally thousands of these URL variations being indexed, so I'd like to use Robots.txt to disallow these variations.
Question:
-
Is this a wise thing to do? Or does Google take into account layered navigation links by default, and I don't need to worry.
-
To implement, I was going to do the following in Robots.txt:
User-agent: *
Disallow: /*?
Disallow: /*=
....which would prevent any dynamic URL with a '?" or '=' from being indexed. Is there a better way to do this, or is this a good solution?
Thank you!
-
-
If you are happy with any URLs with query strings not being indexed your robots.txt will work fine.
Do any or your URLs with question marks in them have links to them? If so you might want to be careful blocking google from indexing them. I would think you'd lose the benefits those links would pass to your site.
-
Tait,
Thanks for the answer. I think the canonical tag would be ideal, but in terms of implementation, it would require some substantial code modification to the site / PHP code as I have a lot of categories, and adding this manually to each one would be very time consuming.
Would preventing the spiders from indexing any URLs with a "?" or "&" (which would only be dynamic URLs variations) cause any problems? Or is this just not an ideal best practice?
Thanks!
-
I don't know if there's a good solution with robots.txt given your URL structure. However, you could use the rel=canonical link tag in the header to force google to treat many of your URLs the same way. This would help you avoid duplicate content penalties.
More on rel=canonical:
http://www.google.com/support/webmasters/bin/answer.py?answer=139394
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
-
If my website do not have a robot.txt file, does it hurt my website ranking?
After a site audit, I find out that my website don't have a robot.txt. Does it hurt my website rankings? One more thing, when I type mywebsite.com/robot.txt, it automatically redirect to the homepage. Please help!
Intermediate & Advanced SEO | | binhlai0 -
Canonical URL & sitemap URL mismatch
Hi We're running a Magento store which doesn't have too much stock rotation. We've implemented a plugin that will allow us to give products custom canonical URLs (basically including the category slug, which is not possible through vanilla Magento). The sitemap feature doesn't pick up on these URLs, so we're submitting URLs to Google that are available and will serve content, but actually point to a longer URL via a canonical meta tag. The content is available at each URL and is near identical (all apart from the breadcrumbs) All instances of the page point to the same canonical URL We are using the longer URL in our internal architecture/link building to show this preference My questions are; Will this harm our visibility? Aside from editing the sitemap, are there any other signals we could give Google? Thanks
Intermediate & Advanced SEO | | tomcraig860 -
Product or Shop in URL
What do you think is better for seo and for sale, I am using woo-ecommerce for health products website. websitename.com/product/keyword OR websitename.com/shop/keyword
Intermediate & Advanced SEO | | MasonBaker0 -
Robots.txt: how to exclude sub-directories correctly?
Hello here, I am trying to figure out the correct way to tell SEs to crawls this: http://www.mysite.com/directory/ But not this: http://www.mysite.com/directory/sub-directory/ or this: http://www.mysite.com/directory/sub-directory2/sub-directory/... But with the fact I have thousands of sub-directories with almost infinite combinations, I can't put the following definitions in a manageable way: disallow: /directory/sub-directory/ disallow: /directory/sub-directory2/ disallow: /directory/sub-directory/sub-directory/ disallow: /directory/sub-directory2/subdirectory/ etc... I would end up having thousands of definitions to disallow all the possible sub-directory combinations. So, is the following way a correct, better and shorter way to define what I want above: allow: /directory/$ disallow: /directory/* Would the above work? Any thoughts are very welcome! Thank you in advance. Best, Fab.
Intermediate & Advanced SEO | | fablau1 -
Robots.txt, does it need preceding directory structure?
Do you need the entire preceding path in robots.txt for it to match? e.g: I know if i add Disallow: /fish to robots.txt it will block /fish
Intermediate & Advanced SEO | | Milian
/fish.html
/fish/salmon.html
/fishheads
/fishheads/yummy.html
/fish.php?id=anything But would it block?: en/fish
en/fish.html
en/fish/salmon.html
en/fishheads
en/fishheads/yummy.html
**en/fish.php?id=anything (taken from Robots.txt Specifications)** I'm hoping it actually wont match, that way writing this particular robots.txt will be much easier! As basically I'm wanting to block many URL that have BTS- in such as: http://www.example.com/BTS-something
http://www.example.com/BTS-somethingelse
http://www.example.com/BTS-thingybob But have other pages that I do not want blocked, in subfolders that also have BTS- in, such as: http://www.example.com/somesubfolder/BTS-thingy
http://www.example.com/anothersubfolder/BTS-otherthingy Thanks for listening0 -
Canonical URLs and Sitemaps
We are using canonical link tags for product pages in a scenario where the URLs on the site contain category names, and the canonical URL points to a URL which does not contain the category names. So, the product page on the site is like www.example.com/clothes/skirts/skater-skirt-12345, and also like www.example.com/sale/clearance/skater-skirt-12345 in another category. And on both of these pages, the canonical link tag references a 3rd URL like www.example.com/skater-skirt-12345. This 3rd URL, used in the canonical link tag is a valid page, and displays the same content as the other two versions, but there are no actual links to this generic version anywhere on the site (nor external). Questions: 1. Does the generic URL referenced in the canonical link also need to be included as on-page links somewhere in the crawled navigation of the site, or is it okay to be just a valid URL not linked anywhere except for the canonical tags? 2. In our sitemap, is it okay to reference the non-canonical URLs, or does the sitemap have to reference only the canonical URL? In our case, the sitemap points to yet a 3rd variation of the URL, like www.example.com/product.jsp?productID=12345. This page retrieves the same content as the others, and includes a canonical link tag back to www.example.com/skater-skirt-12345. Is this a valid approach, or should we revise the sitemap to point to either the category-specific links or the canonical links?
Intermediate & Advanced SEO | | 379seo0 -
URL Error or Penguin Penalty?
I am currently having a major panic as our website www.uksoccershop.com has been largely dropped from Google. We have not made any changes recently and I am not sure why this is happening, but having heard all sorts of horror stories of penguin update, I am fearing the worst. If you google "uksoccershop" you will see that the homepage does not rank. We previously ranked in the top 3 for "football shirts" but now we don't, although on page 2, 3 and 4 you will see one of our category pages ranking (this didn't used to happen). Some rankings are intact, but many have disappeared completely and in some cases been replaced by other pages on our site. I should point out our existing rankings have been consistently there for 5-6 years until today. I logged into webmaster tools and thankfully there is no warning message from Google about spam, etc, but what we do have is 35,000 URL errors for pages which are accessible. An example of this is: | URL: | http://www.uksoccershop.com/categories/5_295_327.html | | Error details In Sitemaps Linked from Last crawled: 6/20/12First detected: 6/15/12Googlebot couldn't access the contents of this URL because the server had an internal error when trying to process the request. These errors tend to be with the server itself, not with the request. Is it possible this is the cause of the issue (we are not currently sure why the URL's are being blocked) and if so, how severe is it and how recoverable?If that is unlikely to cause the issue, what would you recommend our next move is?All help is REALLY REALLY appreciated 🙂
Intermediate & Advanced SEO | | ukss19840 -
Multiple URLs for the same page
I am working with a client and recently discovered that they have several URLs that go to the same page. http://www.maps.com/FunFacts.aspx
Intermediate & Advanced SEO | | WebMarketingandDesign
http://www.maps.com/funfacts.aspx
http://www.maps.com/FunFacts.aspx?nav=FF
http://www.maps.com/FunFacts.aspx?nav=FS
http://www.maps.com/funfacts.aspx?nav=FF
http://www.maps.com/funfacts.aspx?nav=ffhttp://www.maps.com/FunFacts.aspx?nav=MShttp://www.maps.com/funfacts.aspx?nav=
http://www.maps.com/FunFacts.aspx?nav=FF#
http://www.maps.com/FunFacts
http://www.maps.com/funfacts.aspx?.nav=FF I am afraid this is happening all over the site. So, my question is: Is this hurting the SEO and how? If so what is the best way to go about fixing this problem? Thanks for your help!0
