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.

      Let your reputation grow with Reviews AI
      Moz Local

      Let your reputation grow with Reviews AI

      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.

      NEW Keyword Suggestions by Topic
      Moz Pro

      NEW Keyword Suggestions by Topic

      Learn more
    • 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

      Unlock flexible pricing & new endpoints
      Moz API

      Unlock flexible pricing & new endpoints

      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
    • 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. Technical SEO
    4. Should I block robots from URLs containing query strings?

    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.

    Should I block robots from URLs containing query strings?

    Technical SEO
    3
    4
    1157
    Loading More Posts
    • Oldest to Newest
    • Newest to Oldest
    • Most Votes
    Reply
    • Reply as question
    Log in to reply
    This topic has been deleted. Only users with question management privileges can see it.
    • ShearingsGroup
      ShearingsGroup last edited by

      I'm about to block off all URLs that have a query string using robots.txt. They're mostly URLs with coremetrics tags and other referrer info. I figured that search engines don't need to see these as they're always better off with the original URL.

      Might there be any downside to this that I need to consider?

      Appreciate your help / experiences on this one.

      Thanks

      Jenni

      1 Reply Last reply Reply Quote 0
      • ShearingsGroup
        ShearingsGroup @anthonydnelson last edited by

        Thanks for your suggestions. I've already got canonical tags on every page, but they're not all being adhered to and lots of URLs with query strings are still getting organic traffic.

        Passing referrer info behind scenes isn't an option with Coremetrics I don't think. Is it?

        Interested to know more about number 1 though. How would you do that in WMT other than blocking with robots.txt?

        Thanks

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

          Instead of blocking them with robots.txt (which isn't very effective), try using the canonical tag instead.

          For instance, a URL like this:
          http://wwww.testdomain.com/page.html?utm_source=Google&utm_medium=Banner&utm_campaign=Campaign

          You could add this canonical tag in the head:

          With this solution you don't have to worry about losing quality links OR having your query tracking show up in any of the major search engines.

          Cheers- Kyle

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

            The downside to this would be if someone linked to the page with the query string, the search engines wouldn't crawl the page and flow link juice properly to the rest of your site.

            Other options:

            1. Use Google and Bing WMT to ignore those parameter query strings.

            2. Make sure the canoncial tag is on those pages, pointing back to the version without the query string

            3. Try to pass referrer info behind the scenes if possible

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

            Got a burning SEO question?

            Subscribe to Moz Pro to gain full access to Q&A, answer questions, and ask your own.


            Start my free trial


            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

            • Katarina-Borovska

              SEO - New URL structure

              Hi, Currently we have the following url structure for all pages, regardless of the hierarchy: domain.co.uk/page, such as domain/blog name. Can you, please confirm the following: 1. What is the benefit of organising the pages as a hierarchy, i.e. domain/features/feature-name or domain/industries/industry-name or domain/blog/blog name etc. 2. This will create too many 301s - what is Google's tolerance of redirects? Is it worth for us changing the url structure or would you only recommend to add breadcrumbs? Many thanks Katarina

              Technical SEO | | Katarina-Borovska
              1
            • Nomader

              Crawl solutions for landing pages that don't contain a robots.txt file?

              My site (www.nomader.com) is currently built on Instapage, which does not offer the ability to add a robots.txt file. I plan to migrate to a Shopify site in the coming months, but for now the Instapage site is my primary website. In the interim, would you suggest that I manually request a Google crawl through the search console tool? If so, how often? Any other suggestions for countering this Meta Noindex issue?

              Technical SEO | | Nomader
              1
            • Whittie

              Robots.txt on subdomains

              Hi guys! I keep reading conflicting information on this and it's left me a little unsure. Am I right in thinking that a website with a subdomain of shop.sitetitle.com will share the same robots.txt file as the root domain?

              Technical SEO | | Whittie
              0
            • imaginex

              Should I block Map pages with robots.txt?

              Hello, I have a website that was started in 1999. On the website I have map pages for each of the offices listed on my site, for which there are about 120. Each of the 120 maps is in a whole separate html page. There is no content in the page other than the map. I know all of the offices love having the map pages so I don't want to remove the pages. So, my question is would these pages with no real content be hurting the rankings of the other pages on our site? Therefore, should I block the pages with my robots.txt? Would I also have to remove these pages (in webmaster tools?) from Google for blocking by robots.txt to really work? I appreciate your feedback, thanks!

              Technical SEO | | imaginex
              0
            • zeepartner

              Google indexing despite robots.txt block

              Hi This subdomain has about 4'000 URLs indexed in Google, although it's blocked via robots.txt: https://www.google.com/search?safe=off&q=site%3Awww1.swisscom.ch&oq=site%3Awww1.swisscom.ch This has been the case for almost a year now, and it does not look like Google tends to respect the blocking in http://www1.swisscom.ch/robots.txt Any clues why this is or what I could do to resolve it? Thanks!

              Technical SEO | | zeepartner
              0
            • theLotter

              Should the date be included in news URLs

              My website is not a news or magazine site, but we do have a news section updated 2-3 times a week with industry related news. We are working on a new structure for the URLs.
              Should the date be included in the URL? From this article from Google I understand that as long as we submit a news sitemap it doesnt matter whether or not numbers are included in the URL, correct? https://support.google.com/news/publisher/answer/68323?topic=11665

              Technical SEO | | theLotter
              0
            • rakesh_patel

              Products with discrete URLs for each color

              here is the issue.  i have an ecommerce site that on a category page, shows each individual color for each product sold.  and there is a distinct URL for each color.  each product page shares the same content, with the only potentially differentiating factor being customer reviews (not nearly enough of these to differentiate anything). so we have URLs like: www.domain.com/product-green www.domain.com/product-yellow www.domain.com/product-red and so on. i am looking for a way to consolidate these URL while still showing all colors on the category page.  the first solution i am considering is using the hash tag.  so we would create www.domain.com/product#green, www.domain.com/product#yellow, www.domain.com/product#red.  if possible, i would set the canonical tag as www.domain.com/product. the second solution would be to use the canonical tag and keep the URLs as is.  the issue i see here is that we would need to create www.domain.com/product and show that page somewhere.  www.domain.com/product would the URL that the above color URLs would canonicalize to. what would be the preferred solution?  or is there something else?

              Technical SEO | | rakesh_patel
              0
            • nicole.healthline

              Is blocking RSS Feeds with robots.txt necessary?

              Is it necessary to block an rss feed with robots.txt? It seems they are automatically not indexed (http://googlewebmastercentral.blogspot.com/2007/12/taking-feeds-out-of-our-web-search.html) And, google says here that it's important not to block RSS feeds (http://googlewebmastercentral.blogspot.com/2009/10/using-rssatom-feeds-to-discover-new.html) I'm just checking!

              Technical SEO | | nicole.healthline
              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 - 2025 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.