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
    • 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. I have two robots.txt pages for www and non-www version. Will that be a problem?

    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.

    I have two robots.txt pages for www and non-www version. Will that be a problem?

    Technical SEO
    4
    6
    1538
    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.
    • ramb
      ramb last edited by

      There are two robots.txt pages. One for www version and another for non-www version though I have moved to the non-www version.

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

        It wont affect your SEO, you just don;t need the the non-https version

        1 Reply Last reply Reply Quote 0
        • GastonRiera
          Gaston Riera @ramb last edited by

          Hi ramb,

          Short answer: No, it won't affect your ability to rank in Google. Unless both sites (non-www and www version) compete for the same search term and one of them isn't blocked in the correspondent robots.txt file.

          If you can, make sure to have a redirection rule so as everything in the non-www goes to the www.
          It bugs me why aren't you redirecting the complete non-www to the www version.
          Two possibilities come to my mind:

          1. You can't redirect the whole non-www due to some app or technical need. 
            In this case, both versions, if accessible to Google, will be treated as different sites. Thus, you must be sure that both robots file are correct for the given subdomain.
          2. You have a separate website, which contains different content from the www version (this usually happens with subdomains with different page types, such as products.abc.com and categories.abc.com)
            In this case, please be sure that you know what you want to be blocked and have each robots.txt file in their subdomain.

          Keep in mind that Robots file only controls where you don't want googlebot to access in the public version of your website. When a certain page or group of pages are blocked in robots.txt, google won't access them anymore thus not knowing if that page has what it needs to rank for any given search term. Google might rank lower and users will see a note in search results, leading to a lower CTR.

          Hope it helps.
          Best Luck.
          Gaston

          1 Reply Last reply Reply Quote 1
          • Xiano
            Xiano Subscriber last edited by

            Are you redirecting everything on www to non-www? If so, you don't really need a robots.txt to be served for the www subdomain. Google will ignore the original robots.txt file if it is given a 301 anyway.

            1 Reply Last reply Reply Quote 1
            • ramb
              ramb last edited by

              Hi Gatson

              Thank you for your response. Currently, www version of the site is redirected to non-www version, which is the primary(or root) domain.

              But the problem is, I have 2 robots.txt files running for the same site. i.e. same robots.txt file loads on both www and non-www version. (Example https://www.abc.com/robots.txt and https://abc.com/robots.txt).

              Does it affect my site's SEO ??
              Should I redirect www-version of the file to non-www version?
              Your feedback will be highly appreciated.

              Thank you,

              R.

              GastonRiera 1 Reply Last reply Reply Quote 1
              • GastonRiera
                Gaston Riera last edited by

                Hi ramb,

                It's totally fine to have different robots.txt files for different subdomains.
                Thus said, http://domain.com and http://www.domain.com are different subdomains. Consider the one with non-www as the full root domain.

                In case it is needed, here you have Google's official resource about robots.txt: 
                Learn about Robots.txt file - Search Console help

                Hope it helps.
                Best luck.
                Gast

                1 Reply Last reply Reply Quote 2
                • 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

                • LabeliumUSA

                  Robot.txt : How to block a specific file type in several subdirectories ?

                  Hello everyone ! I need help setting up a robot.txt. I'm trying to block all pdf files in particular directories so I'm using this command. In the example below the line is blocking all .gif in the entire site. Block files of a specific file type (for example, .gif) | Disallow: /*.gif$ 2 questions : Can I use this command to specify one particular directory in which I want to block pdf files ? Will this line be recognized by googlebots ? Disallow: /fileadmin/xxxxxxx/xxx/xxxxxxx/*.pdf$ Then I realized that I would have to write as many lines as many directories there are in which I want to block pdf files. Let's say I want to block pdf files in all these 3 directories /fileadmin/directory1 /fileadmin/directory1/sub1 /fileadmin/directory1/sub1/pdf Is there a pattern-matching rule I could use to blocks access to pdf files in all subdirectories instead of writing 3x the above line for each subdirectory ? For exemple : Disallow: /fileadmin/directory1*/ Many thanks in advance for any insight you may have.

                  Technical SEO | | LabeliumUSA
                  0
                • aua

                  Non Published Wordpress Pages

                  Hi, Is there any negative SEO consequences from having too many pages private or not published. Can it like slow the site down or does it not matter? Someone in my dept. has so many pages started/not complete and besides being messy, I wonder if it has any negative impact on the site. Thanks

                  Technical SEO | | aua
                  1
                • sjbridle

                  Do I need a separate robots.txt file for my shop subdomain?

                  Hello Mozzers! Apologies if this question has been asked before, but I couldn't find an answer so here goes... Currently I have one robots.txt file hosted at https://www.mysitename.org.uk/robots.txt We host our shop on a separate subdomain https://shop.mysitename.org.uk Do I need a separate robots.txt file for my subdomain? (Some Google searches are telling me yes and some no and I've become awfully confused!

                  Technical SEO | | sjbridle
                  0
                • zeepartner

                  Robots.txt on http vs. https

                  We recently changed our domain from http to https. When a user enters any URL on http, there is an global 301 redirect to the same page on https. I cannot find instructions about what to do with robots.txt. Now that https is the canonical version, should I block the http-Version with robots.txt? Strangely, I cannot find a single ressource about this...

                  Technical SEO | | zeepartner
                  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
                • JamesDixon70

                  Google Cache Version and Text Only Version are different

                  Across various websites we found Google cache version in the browser loads the full site and all content is visible. However when we try to view TEXT only version of the same page we can't see any content. Example: we have a client with JS scroller menu on the home page. Each scroller serves a separate content section on the same URL. When we copy paste some of the page content in Google, we can see that copy indexed in Google search results as well as showing in Cache version . But as soon as we go into Text Only version we cant see the same copy. We would like to know which version we should trust, Google cache version or the TEXT only version.

                  Technical SEO | | JamesDixon70
                  0
                • JU1985

                  Handling 301s: Multiple pages to a single page (consolidation)

                  Been scouring the interwebs and haven't found much information on redirecting two serparate pages to a single new page.  Here is what it boils down to: Let's say a website has two pages, both with good page authority of products that are becoming fazed out.  The products, Widget A and Widget B, are still popular search terms, but they are being combined into ONE product, Widget C.  While Widget A and Widget B STILL have plenty to do with Widget C, Widget C is now the new page, the main focus page, and the page you want everyone to see and Google to recognize. Now, do I 301 Widget A and Widget B pages to Widget C, ALTHOUGH Widgets A and B previously had nothing to do with one another?   (Remember, we want to try and keep some of that authority the two page have had.) OR do we keep Widget A and Widget B pages "alive", take them off the main navigation, and then put a "disclaimer" on the pages announcing they are now part of Widget C and link to Widget C? OR Should Widgets A and B page be canonicalized to Widget C? Again, keep in mind, widgets A and B previously were not similar, but NOW they are and result in Widget C. (If you are confused, we can provide a REAL work example of what we are talkinga about, but decided to not be specific to our industry for this.) Appreciate any and all thoughts on this.

                  Technical SEO | | JU1985
                  0
                • JohannCR

                  Internal search : rel=canonical vs noindex vs robots.txt

                  Hi everyone, I have a website with a lot of internal search results pages indexed. I'm not asking if they should be indexed or not, I  know they should not according to Google's guidelines. And they make a bunch of duplicated pages so I want to solve this problem. The thing is, if I noindex them, the site is gonna lose a non-negligible chunk of traffic : nearly 13% according to google analytics !!! I thought of blocking them in robots.txt. This solution would not keep them out of the index. But the pages appearing in GG SERPS would then look empty (no title, no description), thus their CTR would plummet and I would lose a bit of traffic too... The last idea I had was to use a rel=canonical tag pointing to the original search page (that is empty, without results), but it would probably have the same effect as noindexing them, wouldn't it ? (never tried so I'm not sure of this) Of course I did some research on the subject, but each of my finding recommanded one of the 3 methods only ! One even recommanded noindex+robots.txt block which is stupid because the noindex would then be useless... Is there somebody who can tell me which option is the best to keep this traffic ? Thanks a million

                  Technical SEO | | JohannCR
                  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.