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
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
-
410 or 301 after URL update?
Hi there, A site i'm working on atm has a thousand "not found" errors on google console (of course, I'm sure there are thousands more it's not showing us!). The issue is a lot of them seem to come from a URL change. Damage has been done, the URLs have been changed and I can't stop that... but as you can imagine, i'm keen to fix as many as humanly possible. I don't want to go mad with 301s - but for external links in, this seems like the best solution? On the other hand, Google is reading internal links that simply aren't there anymore. Is it better to hunt down the new page and 301-it anyway? OR should I 410 and grit my teeth while google crawls and recrawls it, warning me that this page really doesn't exist? Essentially I guess I'm asking, how many 301s are too many and will affect our DA? And what's the best solution for dealing with mass 404 errors - many of which aren't attached or linked to from any other pages anymore? Thanks for any insights 🙂
Intermediate & Advanced SEO | | Fubra0 -
All URLs in the site is 302 redirected to itself
Hi everyone, I have a problem with a website wherein all URLs (homepage, inner pages) are 302 redirected. This is based on Screaming Frog crawl. But the weird thing is that they are 302 redirected to themselves which doesn't make any sense. Example:
Intermediate & Advanced SEO | | alex_goldman
https://www.example.com.au/ is 302 redirected to https://www.example.com.au/ https://www.example.com.au/shop is 302 redirected to https://www.example.com.au/shop https://www.example.com.au/shop/dresses is 302 redirected to https://www.example.com.au/shop/dresses Have you encountered this issue? What did you do to fix it? Would be very glad to hear your responses. Cheers!0 -
Help with facet URLs in Magento
Hi Guys, Wondering if I can get some technical help here... We have our site britishbraces.co.uk , built in Magento. As per eCommerce sites, we have paginated pages throughout. These have rel=next/prev implemented but not correctly ( as it is not in is it in ) - this fix is in process. Our canonicals are currently incorrect as far as I believe, as even when content is filtered, the canonical takes you back to the first page URL. For example, http://www.britishbraces.co.uk/braces/x-style.html?ajaxcatalog=true&brand=380&max=51.19&min=31.19 Canonical to... http://www.britishbraces.co.uk/braces/x-style.html Which I understand to be incorrect. As I want the coloured filtered pages to be indexed ( due to search volume for colour related queries ), but I don't want the price filtered pages to be indexed - I am unsure how to implement the solution? As I understand, because rel=next/prev implemented ( with no View All page ), the rel=canonical is not necessary as Google understands page 1 is the first page in the series. Therefore, once a user has filtered by colour, there should then be a canonical pointing to the coloured filter URL? ( e.g. /product/black ) But when a user filters by price, there should be noindex on those URLs ? Or can this be blocked in robots.txt prior? My head is a little confused here and I know we have an issue because our amount of indexed pages is increasing day by day but to no solution of the facet urls. Can anybody help - apologies in advance if I have confused the matter. Thanks
Intermediate & Advanced SEO | | HappyJackJr0 -
Wildcarding Robots.txt for Particular Word in URL
Hey All, So I know that this isn't a standard robots.txt, I'm aware of how to block or wildcard certain folders but I'm wondering whether it's possible to block all URL's with a certain word in it? We have a client that was hacked a year ago and now they want us to help remove some of the pages that were being autogenerated with the word "viagra" in it. I saw this article and tried implementing it https://builtvisible.com/wildcards-in-robots-txt/ and it seems that I've been able to remove some of the URL's (although I can't confirm yet until I do a full pull of the SERPs on the domain). However, when I test certain URL's inside of WMT it still says that they are allowed which makes me think that it's not working fully or working at all. In this case these are the lines I've added to the robots.txt Disallow: /*&viagra Disallow: /*&Viagra I know I have the solution of individually requesting URL's to be removed from the index but I want to see if anybody has every had success with wildcarding URL's with a certain word in their robots.txt? The individual URL route could be very tedious. Thanks! Jon
Intermediate & Advanced SEO | | EvansHunt0 -
Internal links and URL shortners
Hi guys, what are your thoughts using bit.ly links as internal links on blog posts of a website? Some posts have 4/5 bit.ly links going to other pages of our website (noindexed pages). I have nofollowed them so no seo value is lost, also the links are going to noindexed pages so no need to pass seo value directly. However what are your thoughts on how Google will see internal links which have essential become re-direct links? They are bit.ly links going to result pages basically. Am I also to assume the tracking for internal links would also be better using google analytics functionality? is bit.ly accurate for tracking clicks? Any advice much appreciated, I just wanted to double check this.
Intermediate & Advanced SEO | | pauledwards0 -
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 -
Urls missing from product_cat sitemap
I'm using Yoast SEO plugin to generate XML sitemaps on my e-commerce site (woocommerce). I recently changed the category structure and now only 25 of about 75 product categories are included. Is there a way to manually include urls or what is the best way to have them all indexed in the sitemap?
Intermediate & Advanced SEO | | kisen0 -
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
