• majorAlexa

        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.

          Let your business shine with Listings AI
          Moz Local

          Let your business shine with Listings 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
        • 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. Technical SEO
        4. CGI Parameters: should we worry about duplicate content?

        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.

        CGI Parameters: should we worry about duplicate content?

        Technical SEO
        2
        7
        2736
        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.
        • jackson_lo
          jackson_lo last edited by

          Hi,

          My question is directed to CGI Parameters. I was able to dig up a bit of content on this but I want to make sure I understand the concept of CGI parameters and how they can affect indexing pages.

          Here are two pages:

          No CGI parameter appended to end of the URL:

          http://www.nytimes.com/2011/04/13/world/asia/13japan.html

          CGI parameter appended to the end of the URL:

          http://www.nytimes.com/2011/04/13/world/asia/13japan.html?pagewanted=2&ref=homepage&src=mv

          Questions:

          Can we safely say that CGI parameters = URL parameters that append to the end of a URL? Or are they different? And given that you have rel canonical implemented correctly on your pages, search engines will move ahead and index only the URL that is specified in that tag?

          Thanks in advance for giving your insights. Look forward to your response.

          Best regards,

          Jackson

          1 Reply Last reply Reply Quote 0
          • stevenmusumeche
            stevenmusumeche @jackson_lo last edited by

            Since it is a duplicate and meant for mobile devices, then yes, I would use a canonical tag or even noindex if you don't want it in the index anyway.  Either method would eliminate the duplicate content problem.

            1 Reply Last reply Reply Quote 0
            • jackson_lo
              jackson_lo @jackson_lo last edited by

              The page content is the exact same, the the layout is built for a mobile device. So in essence we don't know why it would be indexed, unless that happens for mobile browsing pages...

              So the solution is to put a rel-canonical tag on that trailing parameter page to prevent duplicate content.

              1 Reply Last reply Reply Quote 0
              • stevenmusumeche
                stevenmusumeche @jackson_lo last edited by

                Is the page with device=iphone&c=y different than example.html?  If not, you should make sure to add the canonical tag to it.  If it is different, then you shouldn't add it because it's not a duplicate.

                1 Reply Last reply Reply Quote 0
                • jackson_lo
                  jackson_lo @stevenmusumeche last edited by

                  Hi Steve,

                  Another thing I came across... a page with trailing parameters like ?device=iphone&c=y is rendering a different set of code. So we have the original page with the content, and then we have www.example.html?device=iphone&c=y. The one with the trailing parameter doesn't have a canonical tag attached to it, but it's indexed in Google (when we search the www.example.html URL) it shows up as number two.

                  Do you have any insights into this? Will this be a duplicate content issue?

                  Thanks!

                  Jackson

                  stevenmusumeche jackson_lo 3 Replies Last reply Reply Quote 0
                  • jackson_lo
                    jackson_lo last edited by

                    Thank you Steve for your response. I had come across Dr. Pete's post in the past but forgot about it. Nonetheless, the CGI parameter explanation and the use of canonical tags answers my question.

                    Jackson

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

                      Yes, you can say CGI parameters = URL parameters.  I don't think many people refer to them as CGI parameters anymore though.

                      To answer your question, yes, as long as you have rel canonical set up correctly, then the URL parameters won't hurt your indexing.

                      For example, if you have your rel canonical set to http://mysite.com/japan.html

                      Then, only that page will be indexed, even if there are various parameters such as

                      http://mysite.com/japan.html?source=something&whateva=somethingelse

                      Just MAKE SURE to setup rel canonical correctly because it can be bad if you don't.  Check out Dr. Pete's post about this: http://www.seomoz.org/blog/catastrophic-canonicalization

                      jackson_lo 1 Reply Last reply Reply Quote 1
                      • 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

                      • kfallconnect

                        404 Error Pages being picked up as duplicate content

                        Hi, I recently noticed an increase in duplicate content, but all of the pages are 404 error pages. For instance, Moz site crawl says this page: https://www.allconnect.com/sc-internet/internet.html has 43 duplicates and all the duplicates are also 404 pages (https://www.allconnect.com/Coxstatic.html for instance is a duplicate of this page). Looking for insight on how to fix this issue, do I add an rel=canonical tag to these 60 error pages that points to the original error page? Thanks!

                        Technical SEO | | kfallconnect
                        0
                      • Lina500

                        How does Google view duplicate photo content?

                        Now that we can search by image on Google and see every site that is using the same photo, I assume that Google is going to use this as a signal for ranking as well. Is that already happening? I ask because I have sold many photos over the years with first-use only rights, where I retain the copyright. So I have photos on my site that I own the copyright for that are on other sites (and were there first). I am not sure if I should make an effort to remove these photos from my site or if I can wait another couple years.

                        Technical SEO | | Lina500
                        0
                      • Digital-DMG

                        How to deal with duplicated content on product pages?

                        Hi, I have a webshop with products with different sizes and colours. For each item I have a different URL, with almost the same content (title tag, product descriptions, etc). In order to prevent duplicated content I'am wondering what is the best way to solve this problem, keeping in mind: -Impossible to create one page/URL for each product with filters on colour and size -Impossible to rewrite the product descriptions in order to be unique I'm considering the option to canonicolize the rest of de colours/size variations, but the disadvantage is that in case the product is not in stock it disappears from the website. Looking forward to your opinions and solutions. Jeroen

                        Technical SEO | | Digital-DMG
                        0
                      • KarlBantleman

                        .com and .co.uk duplicate content

                        hi mozzers I have a client that has just released a .com version of their .co.uk website. They have basically re-skinned the .co.uk version with some US amends so all the content and title tags are the same. What you do recommend? Canonical tag to the .co.uk version? rewrite titles?

                        Technical SEO | | KarlBantleman
                        0
                      • jhinchcliffe

                        Is duplicate content ok if its on LinkedIn?

                        Hey everyone, I am doing a duplicate content check using copyscape, and realized we have used a ton of the same content on LinkedIn as our website. Should we change the LinkedIn company page to be original? Or does it matter? Thank you!

                        Technical SEO | | jhinchcliffe
                        0
                      • Jom

                        Duplicate Content and URL Capitalization

                        I have multiple URLs that SEOMoz is reporting as duplicate content.  The reason is that there are characters in the URL that may, or may not, be capitalized depending on user input. A couple examples are: www.househitz.com/Pennsylvania/Houses-for-sale www.househitz.com/Pennsylvania/houses-for-sale www.househitz.com/Pennsylvania/Houses-for-rent www.househitz.com/Pennsylvania/houses-for-rent There are currently thousands of instances of this on the site. Is this something I should spend effort to try and resolve (may not be minor effort), or should I just ignore it and move on?

                        Technical SEO | | Jom
                        0
                      • CPLDistribution

                        Duplicate Content issue

                        I have been asked to review an old website to an identify opportunities for increasing search engine traffic. Whilst reviewing the site I came across a strange loop. On each page there is a link to printer friendly version: http://www.websitename.co.uk/index.php?pageid=7&printfriendly=yes That page also has a link to a printer friendly version http://www.websitename.co.uk/index.php?pageid=7&printfriendly=yes&printfriendly=yes and so on and so on....... Some of these pages are being included in Google's index. I appreciate that this can't be a good thing, however, I am not 100% sure as to the extent to which it is a bad thing and the priority that should be given to getting it sorted. Just wandering what views people have on the issues this may cause?

                        Technical SEO | | CPLDistribution
                        0
                      • RiceMedia

                        Does 'framing' a website create duplicate content?

                        Something I have not come across before, but hope others here are able offer advice based on experience: A client has independently created a series of mini-sites, aimed at targeting specific locations.  The tactic has worked very well and they have achieved a large amount of well targeted traffic as a result. Each mini-site is different but then in the nav, if you want to view prices or go to the booking page, that then links to what at first appears to be their main site. However, you then notice that the URL is actually situated on the mini-site.  What they have done is 'framed' the main site so that it appears exactly the same even when navigating through this exact replica site. Checking the code, there is almost nothing there - in fact there is actually no content at all.  Below the head, there is a piece of code: <frameset rows="*" framespacing=0 frameborder=0> <frame src="[http://www.example.com](view-source:http://www.yellowskips.com/)" frameborder=0 marginwidth=0 marginheight=0> <noframes>Your browser does not support frames. Click [here](http://www.example.com) to view.noframes> frameset> Given that main site content does not appear to show in the source code, do we have an issue with duplicate content?  This issue is that these 'referrals' are showing in Analytics, despite the fact that the code does not appear in the source, which is slightly confusing for me. They have done this without consultation and I'm very concerned that this could potentially be creating duplicate content of their ENTIRE main site on dozens of mini-sites. I should also add that there are no links to the mini-sites from the main site, so if you guys advise that this is creating duplicate content, I would not be worried about creating a link-wheel if I advise them to link directly to the main site rather than the framed pages. Thanks!

                        Technical SEO | | RiceMedia
                        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.