• BBgmoro

        See all notifications

        Skip to content
        Moz logo Menu open Menu close
        • Products
          • Moz Pro
          • Moz Pro Home
          • Moz Local
          • Moz Local Home
          • STAT
          • Moz API
          • Moz API Home
          • Compare SEO Products
          • Moz Data
        • Free SEO Tools
          • Domain Analysis
          • Keyword Explorer
          • Link Explorer
          • Competitive Research
          • MozBar
          • More Free SEO Tools
        • Learn SEO
          • Beginner's Guide to SEO
          • SEO Learning Center
          • Moz Academy
          • MozCon
          • Webinars, Whitepapers, & Guides
        • Blog
        • Why Moz
          • Digital Marketers
          • Agency Solutions
          • Enterprise Solutions
          • Small Business Solutions
          • The Moz Story
          • New Releases
        • Log in
        • Log out
        • Products
          • Moz Pro

            Your all-in-one suite of SEO essentials.

          • Moz Local

            Raise your local SEO visibility with complete local SEO management.

          • STAT

            SERP tracking and analytics for enterprise SEO experts.

          • Moz API

            Power your SEO with our index of over 44 trillion links.

          • Compare SEO Products

            See which Moz SEO solution best meets your business needs.

          • Moz Data

            Power your SEO strategy & AI models with custom data solutions.

          Turn SEO data into actionable content briefs

          Turn SEO data into actionable content briefs

          Learn more
        • Free SEO Tools
          • Domain Analysis

            Get top competitive SEO metrics like DA, top pages and more.

          • Keyword Explorer

            Find traffic-driving keywords with our 1.25 billion+ keyword index.

          • Link Explorer

            Explore over 40 trillion links for powerful backlink data.

          • Competitive Research

            Uncover valuable insights on your organic search competitors.

          • MozBar

            See top SEO metrics for free as you browse the web.

          • More Free SEO Tools

            Explore all the free SEO tools Moz has to offer.

          Let your business shine with Listings AI

          Let your business shine with Listings AI

          Get found
        • Learn SEO
          • Beginner's Guide to SEO

            The #1 most popular introduction to SEO, trusted by millions.

          • SEO Learning Center

            Broaden your knowledge with SEO resources for all skill levels.

          • On-Demand Webinars

            Learn modern SEO best practices from industry experts.

          • How-To Guides

            Step-by-step guides to search success from the authority on SEO.

          • Moz Academy

            Upskill and get certified with on-demand courses & certifications.

          • MozCon

            Save on Early Bird tickets and join us in London or New York City

          Access 20 years of data with flexible pricing
          Moz API

          Access 20 years of data with flexible pricing

          Find your plan
        • Blog
        • Why Moz
          • Digital Marketers

            Simplify SEO tasks to save time and grow your traffic.

          • Small Business Solutions

            Uncover insights to make smarter marketing decisions in less time.

          • Agency Solutions

            Earn & keep valuable clients with unparalleled data & insights.

          • Enterprise Solutions

            Gain a competitive edge in the ever-changing world of search.

          • The Moz Story

            Moz was the first & remains the most trusted SEO company.

          • New Releases

            Get the scoop on the latest and greatest from Moz.

          Surface actionable competitive intel
          New Feature

          Surface actionable competitive intel

          Learn More
        • Log in
          • Moz Pro
          • Moz Local
          • Moz Local Dashboard
          • Moz API
          • Moz API Dashboard
          • Moz Academy
        • Avatar
          • Moz Home
          • Notifications
          • Account & Billing
          • Manage Users
          • Community Profile
          • My Q&A
          • My Videos
          • Log Out

        The Moz Q&A Forum

        • Forum
        • Questions
        • My Q&A
        • Users
        • Ask the Community

        Welcome to the Q&A Forum

        Browse the forum for helpful insights and fresh discussions about all things SEO.

        1. Home
        2. SEO Tactics
        3. Intermediate & Advanced SEO
        4. Blocking Dynamic URLs with Robots.txt

        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

        Intermediate & Advanced SEO
        2
        4
        6897
        Loading More Posts
        • Watching

          Notify me of new replies.
          Show question in unread.

        • Not Watching

          Do not notify me of new replies.
          Show question in unread if category is not ignored.

        • Ignoring

          Do not notify me of new replies.
          Do not show question in unread.

        • Oldest to Newest
        • Newest to Oldest
        • Most Votes
        Reply
        • Reply as question
        Locked
        This topic has been deleted. Only users with question management privileges can see it.
        • AndrewY
          AndrewY last edited by

          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:

          www.mysite.com/widgets.html

          ...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:

          1. 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.

          2. 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!

          1 Reply Last reply Reply Quote 1
          • TaitLarson
            TaitLarson @AndrewY last edited by

            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.

            1 Reply Last reply Reply Quote 0
            • AndrewY
              AndrewY @TaitLarson last edited by

              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!

              TaitLarson 1 Reply Last reply Reply Quote 0
              • TaitLarson
                TaitLarson last edited by

                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

                http://www.seomoz.org/blog/canonical-url-tag-the-most-important-advancement-in-seo-practices-since-sitemaps

                AndrewY 1 Reply Last reply Reply Quote 0
                • 1 / 1
                • First post
                  Last post

                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.

                • See all categories

                Related Questions

                • Jonathan.Smith

                  Should I include URLs that are 301'd or only include 200 status URLs in my sitemap.xml?

                  I'm not sure if I should be including old URLs (content) that are being redirected (301) to new URLs (content) in my sitemap.xml. Does anyone know if it is best to include or leave out 301ed URLs in a xml sitemap?

                  Intermediate & Advanced SEO | | Jonathan.Smith
                  0
                • EvansHunt

                  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 | | EvansHunt
                  0
                • jmorehouse

                  Should I disallow all URL query strings/parameters in Robots.txt?

                  Webmaster Tools correctly identifies the query strings/parameters used in my URLs, but still reports duplicate title tags and meta descriptions for the original URL and the versions with parameters. For example, Webmaster Tools would report duplicates for the following URLs, despite it correctly identifying the "cat_id" and "kw" parameters: /Mulligan-Practitioner-CD-ROM
                  /Mulligan-Practitioner-CD-ROM?cat_id=87
                  /Mulligan-Practitioner-CD-ROM?kw=CROM Additionally, theses pages have self-referential canonical tags, so I would think I'd be covered, but I recently read that another Mozzer saw a great improvement after disallowing all query/parameter URLs, despite Webmaster Tools not reporting any errors. As I see it, I have two options: Manually tell Google that these parameters have no effect on page content via the URL Parameters section in Webmaster Tools (in case Google is unable to automatically detect this, and I am being penalized as a result). Add "Disallow: *?" to hide all query/parameter URLs from Google. My concern here is that most backlinks include the parameters, and in some cases these parameter URLs outrank the original. Any thoughts?

                  Intermediate & Advanced SEO | | jmorehouse
                  0
                • Modbargains

                  Dilemma about "images" folder in robots.txt

                  Hi, Hope you're doing well. I am sure, you guys must be aware that Google has updated their webmaster technical guidelines saying that users should allow access to their css files and java-scripts file if it's possible. Used to be that Google would render the web pages only text based. Now it claims that it can read the css and java-scripts. According to their own terms, not allowing access to the css files can result in sub-optimal rankings. "Disallowing crawling of Javascript or CSS files in your site’s robots.txt directly harms how well our algorithms render and index your content and can result in suboptimal rankings."http://googlewebmastercentral.blogspot.com/2014/10/updating-our-technical-webmaster.htmlWe have allowed access to our CSS files. and Google bot, is seeing our webapges more like a normal user would do. (tested it in GWT)Anyhow, this is my dilemma. I am sure lot of other users might be facing the same situation. Like any other e commerce companies/websites.. we have lot of images. Used to be that our css files were inside our images folder, so I have allowed access to that. Here's the robots.txt --> http://www.modbargains.com/robots.txtRight now we are blocking images folder, as it is very huge, very heavy, and some of the images are very high res. The reason we are blocking that is because we feel that Google bot might spend almost all of its time trying to crawl that "images" folder only, that it might not have enough time to crawl other important pages. Not to mention, a very heavy server load on Google's and ours. we do have good high quality original pictures. We feel that we are losing potential rankings since we are blocking images. I was thinking to allow ONLY google-image bot, access to it. But I still feel that google might spend lot of time doing that. **I was wondering if Google makes a decision saying, hey let me spend 10 minutes for google image bot, and let me spend 20 minutes for google-mobile bot etc.. or something like that.. , or does it have separate "time spending" allocations for all of it's bot types. I want to unblock the images folder, for now only the google image bot, but at the same time, I fear that it might drastically hamper indexing of our important pages, as I mentioned before, because of having tons & tons of images, and Google spending enough time already just to crawl that folder.**Any advice? recommendations? suggestions? technical guidance? Plan of action? Pretty sure I answered my own question, but I need a confirmation from an Expert, if I am right, saying that allow only Google image access to my images folder. Sincerely,Shaleen Shah

                  Intermediate & Advanced SEO | | Modbargains
                  1
                • djlittman

                  If I own a .com url and also have the same url with .net, .info, .org, will I want to point them to the .com IP address?

                  I have a domain, for example, mydomain.com and I purchased mydomain.net, mydomain.info, and mydomain.org.  Should I point the host @ to the IP where the .com is hosted in wpengine? I am not doing anything with the .org, .info, .net domains.  I simply purchased them to prevent competitors from buying the domains.

                  Intermediate & Advanced SEO | | djlittman
                  0
                • workathomecareers

                  Should comments and feeds be disallowed in robots.txt?

                  Hi My robots file is currently set up as listed below. From an SEO point of view is it good to disallow feeds, rss and comments? I feel allowing comments would be a good thing because it's new content that may rank in the search engines as the comments left on my blog often refer to questions or companies folks are searching for more information on. And the comments are added regularly. What's your take? I'm also concerned about the /page being blocked. Not sure how that benefits my blog from an SEO point of view as well. Look forward to your feedback. Thanks. Eddy User-agent: Googlebot Crawl-delay: 10 Allow: /* User-agent: * Crawl-delay: 10 Disallow: /wp- Disallow: /feed/ Disallow: /trackback/ Disallow: /rss/ Disallow: /comments/feed/ Disallow: /page/ Disallow: /date/ Disallow: /comments/ # Allow Everything Allow: /*

                  Intermediate & Advanced SEO | | workathomecareers
                  0
                • IHSwebsite

                  Robots.txt: Can you put a /* wildcard in the middle of a URL?

                  We have noticed that Google is indexing the language/country directory versions of directories we have disallowed in our robots.txt. For example: Disallow: /images/ is blocked just fine However, once you add our /en/uk/ directory in front of it, there are dozens of pages indexed. The question is: Can I put a wildcard in the middle of the string, ex. /en/*/images/, or do I need to list out every single country for every language in the robots file. Anyone know of any workarounds?

                  Intermediate & Advanced SEO | | IHSwebsite
                  0
                • seo123456

                  Using 2 wildcards in the robots.txt file

                  I have a URL string which I don't want to be indexed. it includes the characters _Q1 ni the middle of the string. So in the robots.txt can I use 2 wildcards in the string to take out all of the URLs with that in it?  So something like /_Q1.  Will that pickup and block every  URL with those characters in the string? Also, this is not directly of the root, but in a secondary directory, so .com/.../_Q1.  So do I have to format the robots.txt as //_Q1* as it will be in the second folder or just using /_Q1 will pickup everything no matter what folder it is on? Thanks.

                  Intermediate & Advanced SEO | | seo123456
                  0

                Get started with Moz Pro!

                Unlock the power of advanced SEO tools and data-driven insights.

                Start my free trial
                Products
                • Moz Pro
                • Moz Local
                • Moz API
                • Moz Data
                • STAT
                • Product Updates
                Moz Solutions
                • SMB Solutions
                • Agency Solutions
                • Enterprise Solutions
                • Digital Marketers
                Free SEO Tools
                • Domain Authority Checker
                • Link Explorer
                • Keyword Explorer
                • Competitive Research
                • Brand Authority Checker
                • Local Citation Checker
                • MozBar Extension
                • MozCast
                Resources
                • Blog
                • SEO Learning Center
                • Help Hub
                • Beginner's Guide to SEO
                • How-to Guides
                • Moz Academy
                • API Docs
                About Moz
                • About
                • Team
                • Careers
                • Contact
                Why Moz
                • Case Studies
                • Testimonials
                Get Involved
                • Become an Affiliate
                • MozCon
                • Webinars
                • Practical Marketer Series
                • MozPod
                Connect with us

                Contact the Help team

                Join our newsletter
                Moz logo
                © 2021 - 2026 SEOMoz, Inc., a Ziff Davis company. All rights reserved. Moz is a registered trademark of SEOMoz, Inc.
                • Accessibility
                • Terms of Use
                • Privacy

                Looks like your connection to Moz was lost, please wait while we try to reconnect.