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
    • 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. Diagnosing Canonical Errors Is Screaming frog reliable?

    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.

    Diagnosing Canonical Errors Is Screaming frog reliable?

    Technical SEO
    3
    9
    2173
    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.
    • Nightwing
      Nightwing last edited by

      Morning from suny & warm wetherby UK 🙂

      On this page http://www.goldsboroughestates.co.uk/how-we-care-for-you/right-to-manage/ screaming frog is citing a canonical error but I'm confused as this piece of code is in place:

      http://www.goldsboroughestates.co.uk/About/right-to-manage" />

      So my question is please - "Does this page  http://www.goldsboroughestates.co.uk/how-we-care-for-you/right-to-manage/ have a caninical error or is screaming frog useless?

      Other examples where screaming frog is picking up canonical errors include:
      http://www.goldsboroughestates.co.uk/what-our-customers-say/right-to-manage/
      http://www.goldsboroughestates.co.uk/buying-a-home/right-to-manage/

      Oh forgot to say the preffered version is http://www.goldsboroughestates.co.uk/About/right-to-manage/

      Any insights welcvome 🙂

      1 Reply Last reply Reply Quote 0
      • Keszi
        Keszi @Nightwing last edited by

        Hey,

        Long time since the Question, I was just wondering if you worked it out or not.

        Gr.,

        Istvan

        1 Reply Last reply Reply Quote 0
        • Dr-Pete
          Dr-Pete Staff @Nightwing last edited by

          I think Screaming Frog is just warning you that the canonical version doesn't seem to match the display URL. They can't really tell (we have the same problem in SEOmoz tools) what the "right" canonical is - they can just warn of a mismatch.

          I'm a bit confused as to the purpose of the dual URLs here. The best canonical implementation is to use one URL. The canonical tag can act as a band-aid, but  consistency is still the best defense. Having multiple paths to the same page is rarely beneficial.

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

            Having spoke to oiur internal helpdesk (Who I trust & do know what theyre talking about) theyve taken a look at:

            http://www.goldsboroughestates.co.uk/footer-links/left/right-to-manage/

            http://www.goldsboroughestates.co.uk/how-we-care-for-you/right-to-manage/

            http://www.goldsboroughestates.co.uk/buying-a-home/right-to-manage/

            http://www.goldsboroughestates.co.uk/what-our-customers-say/right-to-manage/

            and I'm afraid they have a different perspective which is they see no canonical problem 😞 Hey ho think I'll just set my head on fire then maybe things will be more clearer 😉

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

              Hi Istvan - your advice is good but ive just discovered its not been implemented! Time to kick some ass, I'll update you 🙂

              1 Reply Last reply Reply Quote 0
              • Keszi
                Keszi @Nightwing last edited by

                Hey,

                Any news on how it went? I am curious if that was the problem or not. 🙂

                Gr.,

                Istvan

                1 Reply Last reply Reply Quote 0
                • Keszi
                  Keszi @Nightwing last edited by

                  Hey,

                  Maybe this helps you a littlebit: http://www.seomoz.org/blog/an-seos-guide-to-http-status-codes

                  Dr. Pete's article explains well how the status codes work.

                  Gr.,

                  Istvan

                  1 Reply Last reply Reply Quote -1
                  • Nightwing
                    Nightwing @Keszi last edited by

                    Wow great anser, I'm on to this now & will updat you with how things went 🙂

                    Keszi Nightwing Dr-Pete 6 Replies Last reply Reply Quote 0
                    • Keszi
                      Keszi last edited by

                      Hey there!

                      I think I have found what your problem is with you canonical link 🙂

                      In your code you have:

                      And probably you are somewhere forcing the URls to have a / at the end.

                      So basically you are confusing browsers and search engine bots, because they now cannot tell which is the real version:

                      SE enters the page. Then it sees that the right version should be the one WITHOUT a "/" at the end, then that pages has a 301 redirect to the version which HAS a "/" at the end of the URL (but that has a canonical which points out that the preffered version should be ). So it is a non-ending circle.

                      So if you add a / to the end of your URl, your problem should be solved.

                      Final thought: Screaming Frog is working well.

                      I hope this was a solution.

                      Cheers,

                      Istvan

                      Nightwing 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

                      • andrew-mso

                        Canonical or hreflang?

                        I have four English sites for four different countries, UK, Ireland, Australia and New Zealand and I want to share some content between the sites. On the pages that share the content, which is essentially exactly the same on all 4 sites, do I use the hreflang tags like: or do I add a canonical tag to the other three pointing to the "origin", which would be the UK site? I believe it is best practice to use one or the other, but I'm not sure which make sense in this situation.

                        Technical SEO | | andrew-mso
                        0
                      • GhillC

                        Trailing slash URLs and canonical links

                        Hi, I've seen a fair amount of topics speaking about the difference between domain names ending with or without trailing slashes, the impact on crawlers and how it behaves with canonical links.
                        However, it sticks to domain names only.
                        What about subfolders and pages then? How does it behaves with those? Say I've a site structured like this:
                        https://www.domain.com
                        https://www.domain.com/page1 And for each of my pages, I've an automatic canonical link ending with a slash.
                        Eg. rel="canonical" href="https://www.domain.com/page1/" /> for the above page. SEM Rush flags this as a canonical error. But is it exactly?
                        Are all my canonical links wrong because of that slash? And as subsidiary question, both domain.com/page1 and domain.com/page1/ are accessible. Is it this a mistake or it doesn't make any difference (I've read that those are considered different pages)? Thanks!
                        G

                        Technical SEO | | GhillC
                        0
                      • SoulSurfer8

                        Does Google read dynamic canonical tags?

                        Does Google recognize rel=canonical tag if loaded dynamically via javascript? Here's what we're using to load: <script> //Inject canonical link into page head if (window.location.href.indexOf("/subdirname1") != -1) { canonicalLink = window.location.href.replace("/kapiolani", ""); } if (window.location.href.indexOf("/subdirname2") != -1) { canonicalLink = window.location.href.replace("/straub", ""); } if (window.location.href.indexOf("/subdirname3") != -1) { canonicalLink = window.location.href.replace("/pali-momi", ""); } if (window.location.href.indexOf("/subdirname4") != -1) { canonicalLink = window.location.href.replace("/wilcox", ""); } if (canonicalLink != window.location.href) { var link = document.createElement('link'); link.rel = 'canonical'; link.href = canonicalLink; document.head.appendChild(link); } script>

                        Technical SEO | | SoulSurfer8
                        0
                      • Shirley.Fenlason

                        If you use canonicals do the meta descriptions need to be different?

                        For example, we have 3 different subsites with the same pages. We will put canonicals so they reference the main pages. Do the meta descriptions have to be different for each of the three pages? How does Google handle meta data when using canonicals?

                        Technical SEO | | Shirley.Fenlason
                        0
                      • Answer2cancer

                        Rel=canonical on Godaddy Website builder

                        Hey crew! First off this is a last resort asking this question here. Godaddy has not been able to help so I need my Moz Fam on this one. So common problem My crawl report is showing I have duplicate home pages www.answer2cancer.org and www.answer2cancer.org/home.html I understand this is a common issue with apache webservers which is why the wonderful rel=canonical tag was created! I don't want to go through the hassle of a 301 redirect of course for such a  simple issue. Now here's the issue. Godaddy website builder does not make any sense to me. In wordpress I could just go add the tag to the head in the back end. But no such thing exist in godaddy. You have to do this weird drag and drop html block and drag it somewhere on the site and plug in the code. I think putting before the code instead of just putting it in there. So I did that but when I publish and inspect in chrome I cannot see the tag in the head! This is confusing I know. the guy at godaddy didn't stand a chance lol. Anyway much love for any replies!

                        Technical SEO | | Answer2cancer
                        0
                      • jeeyer

                        Set Canonical for Paginated Content

                        Hi Guys, This is a follow up on this thread: http://moz.com/community/q/dynamic-url-parameters-woocommerce-create-404-errors# I would like to know how I can set a canonical link in Wordpress/Woocommerce which points to "View All" on category pages on our webshop.
                        The categories on my website can be viewed as 24/48 or All products but because the quanity constantly changes viewing 24 or 48 products isn't always possible. To point Google in the right direction I want to let them know that "View All" is the best way to go.
                        I've read that Google's crawler tries to do this automatically but not sure if this is the case on on my website. Here is some more info on the issue: https://support.google.com/webmasters/answer/1663744?hl=en
                        Thanks for the help! Joost

                        Technical SEO | | jeeyer
                        0
                      • Nightwing

                        Screaming From occurences and canonicals what does it all mean

                        Bonjourno from Wetherby UK... Ive used a package called screamong frog to diagnose canonical errors but can anyone tell me what this means? http://i216.photobucket.com/albums/cc53/zymurgy_bucket/understand-occurances-canonical.jpg Thanks in advance. David

                        Technical SEO | | Nightwing
                        0
                      • jdossetti

                        Adding Rel Canonical to multiple pages

                        Hi, Our CMS generates a lot of duplicate content, (Different versions of every page for 3 different font sizes). There are many other reasons why we should drop this current CMS and go with something else, and we are in the process of doing that. But for now, does anyone know how would I do the following: I've created a spreadsheet that contains the following: Column 1: rel="canonical" tag for URL Column 2: Duplicate Content URL # 1 Column 3: Duplicate Content URL # 2 Column 4: Duplicate Content URL # 3 I want to add the tag from column 1 into the head of every page from column 2,3, and 4. What would be a fast way to do this considering that I have around 1800 rows. Check the screenshot of the builtwith.com result to see more information about the website if that helps. Farris bxySL

                        Technical SEO | | jdossetti
                        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.