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.

      Save 36% now!
      Moz Pro

      Save 36% now!

      Sign up
    • 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.

      Save 36% now!
      Moz Pro

      Save 36% now!

      Sign up
    • 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. Intermediate & Advanced SEO
    4. Robots.txt - Do I block Bots from crawling the non-www version if I use www.site.com ?

    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.

    Robots.txt - Do I block Bots from crawling the non-www version if I use www.site.com ?

    Intermediate & Advanced SEO
    2
    2
    1222
    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.
    • morg45454
      morg45454 last edited by

      my site uses is set up at http://www.site.com I have my site redirected from non- www to the www in htacess file. My question is... what should my robots.txt file look like for the non-www site? Do you block robots from crawling the site like this? Or do you leave it blank?

      User-agent: *

      Disallow: /

      Sitemap: http://www.morganlindsayphotography.com/sitemap.xml

      Sitemap: http://www.morganlindsayphotography.com/video-sitemap.xml

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

        Hi there

        If you configured this properly, I wouldn't worry about this at all.

        Check your internal links and sitemap to make sure that your URLs listed as a reflection of this www. version.

        Beyond that, you're all good, no need to block non www.

        Hope this helps! Good luck!

        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

        • Mat_C

          Block session id URLs with robots.txt

          Hi, I would like to block all URLs with the parameter '?filter=' from being crawled by including them in the robots.txt. Which directive should I use: User-agent: *
          Disallow: ?filter= or User-agent: *
          Disallow: /?filter= In other words, is the forward slash in the beginning of the disallow directive necessary? Thanks!

          Intermediate & Advanced SEO | | Mat_C
          1
        • jamiegriz

          SEO Best Practices regarding Robots.txt disallow

          I cannot find hard and fast direction about the following issue: It looks like the Robots.txt file on my server has been set up to disallow "account" and "search" pages within my site, so I am receiving warnings from the Google Search console that URLs are being blocked by Robots.txt. (Disallow: /Account/ and Disallow: /?search=). Do you recommend unblocking these URLs? I'm getting a warning that over 18,000 Urls are blocked by robots.txt. ("Sitemap contains urls which are blocked by robots.txt"). Seems that I wouldn't want that many urls blocked. ? Thank you!!

          Intermediate & Advanced SEO | | jamiegriz
          0
        • fablau

          Using "nofollow" internally can help with crawl budget?

          Hello everyone. I was reading this article on semrush.com, published the last year, and I'd like to know your thoughts about it: https://www.semrush.com/blog/does-google-crawl-relnofollow-at-all/ Is that really the case? I thought that Google crawls and "follows" nofollowed tagged links even though doesn't pass any PR to the destination link. If instead Google really doesn't crawl internal links tagged as "nofollow", can that really help with crawl budget?

          Intermediate & Advanced SEO | | fablau
          0
        • ThomasHarvey

          Large robots.txt file

          We're looking at potentially creating a robots.txt with 1450 lines in it. This will remove 100k+ pages from the crawl that are all old pages (I know, the ideal would be to delete/noindex but not viable unfortunately) Now the issue i'm thinking is that a large robots.txt will either stop the robots.txt from being followed or will slow our crawl rate down. Does anybody have any experience with a robots.txt of that size?

          Intermediate & Advanced SEO | | ThomasHarvey
          0
        • SolveWebMedia

          My site shows 503 error to Google bot, but can see the site fine. Not indexing in Google. Help

          Hi, This site is not indexed on Google at all. http://www.thethreehorseshoespub.co.uk Looking into it, it seems to be giving a 503 error to the google bot. I can see the site I have checked source code Checked robots Did have a sitemap param. but removed it for testing GWMT is showing 'unreachable' if I submit a site map or fetch Any ideas on how to remove this error? Many thanks in advance

          Intermediate & Advanced SEO | | SolveWebMedia
          0
        • GSO

          Should I be using meta robots tags on thank you pages with little content?

          I'm working on a website with hundreds of thank you pages, does it make sense to no follow, no index these pages since there's little content on them? I'm thinking this should save me some crawl budget overall but is there any risk in cutting out the internal links found on the thank you pages? (These are only standard site-wide footer and navigation links.) Thanks!

          Intermediate & Advanced SEO | | GSO
          0
        • RobertFisher

          Www and non www how to check it.......for sure. No, really, for absolutely sure!!

          Ok, I know it has been asked, answered, and re-asked but I am going to ask for a specific reason. As you know, anyone who is a graphic designer or web developer is also an expert in SEO....Right??? 
          I am dealing with a client who is clinging to a developer but wants us to do the SEO on a myriad of sites. All connect to his main site via links, etc. The main site was just redeveloped by a developer who claims extensive SEO knowledge. The client who referred me to them is getting over twenty times the organic clients they are and is in a JV with the new client. Soooo, I want to show them once and for all they are wrong on the www. versus non-www. When I do a Site:NewClient.com in Google I get a total of 13 www.newclient.com url's and 20 newclient.com url's without the www. Oddly, none are dupes of the other. So, where the www.NewClient/toy-boat/ is there, the other might be non www.  NewClient/toy-boat/sailing-green/ Even the contact page is in the www.NewClient/contact versus the non www of NewClient/Contact-us/ But, both pages seem to resolve to the non www. (A note here is that I originally instructed the designer to do non www to www. because the page authority was on the www.NewClient and he did opposite. With pages that are actually PDF files, if you try to use the www.NewClient/CoolGuy.pdf it comes up 404. When I check our sites, using Site:We-Build-Better.com ours return all www.We-Build-better/ url's. So, any other advice on how to insure these correct or incorrect? Oddly, we have discovered that sometimes in OSE, even with a correct canonical redirect it shows one without authority and the other with....we have contacted support. Come on mozzers, hook a brother up!

          Intermediate & Advanced SEO | | RobertFisher
          0
        • AndrewY

          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: 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: 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!

          Intermediate & Advanced SEO | | AndrewY
          1

        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.