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.

      Track your brand’s footprint in AI search
      Moz Pro

      Track your brand’s footprint in AI search

      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. On-Page Optimization
    4. Solve duplicate content issues by using 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.

    Solve duplicate content issues by using robots.txt

    On-Page Optimization
    2
    5
    1113
    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.
    • JohnHuynh
      JohnHuynh last edited by

      Hi,

      I have a primary website and beside that I also have some secondary websites with have same contents with primary website. This lead to duplicate content errors. Because of having many URL duplicate contents, so I want to use the robots.txt file to prevent google index the secondary websites to fix the duplicate content issue. Is it ok?

      Thank for any help!

      1 Reply Last reply Reply Quote 0
      • JohnHuynh
        JohnHuynh @simon_realbuzz last edited by

        yes, robots.txt is the bad way, I will try to use canonical tag. Thanks for your help!

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

          Using robots.txt is perhaps not the best way of doing it. Using the canonical or a noindex meta tag would likely be best. I think the reasons for this are best summed up in this article which explains, probably better than I could, why robots.txt is not the best way of dealing with duplicate content. Hope this helps.

          JohnHuynh 1 Reply Last reply Reply Quote 1
          • JohnHuynh
            JohnHuynh @simon_realbuzz last edited by

            I have tried to use cross-domain canonical, but this is too difficult for me. So, I want to confirm if I use the robots.txt file is ok or not?

            Thanks

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

              Why not use a cross-domain canonical whereby you reference the pages on your primary website as the canonical version on your secondary websites, thereby eliminating the duplication.

              For example on each page that is duplicate on your secondary website you would add the following to the head to reference the primary pages:

              JohnHuynh 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

              • AslanBarselinov

                Duplicate content in sidebar

                Hi guys. So I have a few sentences (about 50 words) of duplicate content across all pages of my website (this is a repeatable text in sidebar). Each page of my website contains about 1300 words (unique content) in total, and 50 words of duplicate content in sidebar. Does having a duplicate content of this length in sidebar affect the rankings of my website in any way? Thank you so much for your replies.

                On-Page Optimization | | AslanBarselinov
                1
              • dreservices

                How to fix duplicate content for homepage and index.html

                Hello, I know this probably gets asked quite a lot but I haven't found a recent post about this in 2018 on Moz Q&A, so I thought I would check in and see what the best route/solution for this issue might be. I'm always really worried about making any (potentially bad/wrong) changes to the site, as it's my livelihood, so I'm hoping someone can point me in the right direction. Moz, SEMRush and several other SEO tools are all reporting that I have duplicate content for my homepage and index.html (same identical page). According to Moz, my homepage (without index.html) has PA 29 and index.html has PA 15. They are both showing Status 200. I read that you can either do a 301 redirect or add rel=canonical I currently have a 301 setup for my http to https page and don't have any rel=canonical added to the site/page. What is the best and safest way to get rid of duplicate content and merge the my non index and index.html homepages together these days? I read that both 301 and canonical pass on link juice but I don't know what the best route for me is given what I said above. Thank you for reading, any input is greatly appreciated!

                On-Page Optimization | | dreservices
                0
              • rootandbranch

                Does using Yoast variables for meta content overwrite any pages that already have custom meta content?

                The question is about the Yoast plugin for WP sites. Let's say I have a site with 200 pages and custom meta descriptions / title tags already in place for the top 30 pages. If I use the Yoast variable tool to complete meta content for the remaining pages (and make my Moz issue tracker look happier), will that only affect the pages without custom meta descriptions or will it overwrite even the pages with the custom meta content that I want? In this situation, I do want to keep the meta content that is already in place on select pages. Thanks! Zack

                On-Page Optimization | | rootandbranch
                0
              • LeahHutcheon

                Duplicate Content for Men's and Women's Version of Site

                So, we're a service where you can book different hairdressing services from a number of different salons (site being worked on). We're doing both a male and female version of the site on the same domain which users are can select between on the homepage. The differences are largely cosmetic (allowing the designers to be more creative and have a bit of fun and to also have dedicated male grooming landing pages), but I was wondering about duplicate pages. While most of the pages on each version of the site will be unique (i.e. [male service] in [location] vs [female service] in [location] with the female taking precedent when there are duplicates), what should we do about the likes of the "About" page? Pages like this would both be unique in wording but essentially offer the same information and does it make sense to to index two different "About" pages, even if the titles vary? My question is whether, for these duplicate pages, you would set the more popular one as the preferred version canonically, leave them both to be indexed or noindex the lesser version entirely? Hope this makes sense, thanks!

                On-Page Optimization | | LeahHutcheon
                0
              • RoxBrock

                If I enbed the same video from my YouTube account on two different websites, will I get a duplicate content penalty?

                I have a YouTube video I want to show my B2B and B2C customers. But I have a different websites for each. If I embed the video will I get duplicate content strike against me?

                On-Page Optimization | | RoxBrock
                0
              • MarkCA

                Does schema.org assist with duplicate content concerns

                The issue of duplicate content has been well documented and there are lots of articles suggesting to noindex archive pages in WordPress powered sites. Schema.org allows us to mark-up our content, including marking a components URL. So my question simply, is no-indexing archive (category/tag) pages still relevant when considering duplicate content? These pages are in essence a list of articles, which can be marked as an article or blog posting, with the url of the main article and all the other cool stuff the scheme gives us. Surely Google et al are smart enough to recognise these article listings as gateways to the main content, therefore removing duplicate content concerns. Of course, whether or not doing this is a good idea will be subjective and based on individual circumstances - I'm just interested in whether or not the search engines can handle this appropriately.

                On-Page Optimization | | MarkCA
                0
              • Shipyard_Agency

                Best practice for franchise sites with duplicated content

                I know that duplicated content is a touchy subject but I work with multiple franchise groups and each franchisee wants their own site, however, almost all of the sites use the same content.  I want to make sure that Google sees each one of these sites as unique sites and does not penalize them for the following issues. All sites are hosted on the same server therefor the same IP address All sites use generally the same content across their product pages (which are very very important pages) *templated content approved by corporate Almost all sites have the same design (A few of the groups we work with have multiple design options) Any suggestions would be greatly appreciated. Thanks Again Aaron

                On-Page Optimization | | Shipyard_Agency
                0
              • MeghanPrudencio

                Would it be bad to change the canonical URL to the most recent page that has duplicate content, or should we just 301 redirect to the new page?

                Is it bad to change the canonical URL in the tag, meaning does it lose it's stats? If we add a new page that may have duplicate content, but we want that page to be indexed over the older pages, should we just change the canonical page or redirect from the original canonical page? Thanks so much! -Amy

                On-Page Optimization | | MeghanPrudencio
                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.