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
      • SEO Q&A
      • Webinars, Whitepapers, & Guides
    • Blog
    • Why Moz
      • Agency Solutions
      • Enterprise Solutions
      • Small Business Solutions
      • Case Studies
      • 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.

      NEW Keyword Suggestions by Topic
      Moz Pro

      NEW Keyword Suggestions by Topic

      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
      • 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.

      • Case Studies

        Explore how Moz drives ROI with a proven track record of success.

      • 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

                      • kguard

                        What is the correct Canonical tag on m.site?

                        We have 2 separate sites for desktop (www.example.com) and mobile (m.example.com) As per the guideline, we have added Rel=alternate tag on www.example.com to point to mobile URL(m.example.com) and Rel=canonical tag on m.example.com to point to Desktop site(www.example.com).However, i didn't find any guideline on what canonical tag we should add ifFor Desktop sitewww.example.com/PageA - has a canonical tag to www.example.com/PageBOn this page, we have a Rel=alternate tag m.example.com/pageAWhat will be the canonical we should add for the mobile version of Page Am.example.com/PageA - Canonical tag point to www.example.com/PageA -or www.example.com/PageB?Kalpesh

                        Technical SEO | | kguard
                        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
                      • 94501

                        URL has caps, but canonical does not. Now what?

                        Hi, Just started working with a site that has the occasional url with a capital, but then the url in the canonical as lower case. Neither, when entered in a browser, resolves to the other. It's a Shopify site. What do you think I should do?

                        Technical SEO | | 94501
                        0
                      • zasite

                        Do URLs with canonical tags get indexed by Google?

                        Hi, we re-branded and launched a new website in February 2016. In June we saw a steep drop in the number of URLs indexed, and there have continued to be smaller dips since. We started an account with Moz and found several thousand high priority crawl errors for duplicate pages and have since fixed those with canonical tags. However, we are still seeing the number of URLs indexed drop. Do URLs with canonical tags get indexed by Google? I can't seem to find a definitive answer on this. A good portion of our URLs have canonical tags because they are just events with different dates, but otherwise the content of the page is the same.

                        Technical SEO | | zasite
                        0
                      • jessicarcf

                        Removing a canonical tag from Pagination pages

                        Hello, Currently on our site we have the rel=prev/next markup for pagination along with a self pointing canonical via the Yoast Plugin. However, on page 2 of our paginated series, (there's only 2 pages currently), the canonical points to page one, rather than page 2. My understanding is that if you use a canonical on paginated pages it should point to a viewall page as opposed to page one. I also believe that you don't need to use both a canonical and the rel=prev/next markup, one or the other will do. As we use the markup I wanted to get rid of the canonical, would this be correct? For those who use the Yoast Plugin have you managed to get that to work? Thanks!

                        Technical SEO | | jessicarcf
                        0
                      • sidstar

                        The Mysterious Case of Pagination, Canonical Tags

                        Hey guys, My head explodes when I think of this problem. So I will leave it to you guys to find a solution... My root domain (xxx.com) runs on WordPress platform. I use Yoast SEO plugin. The next page of root domain -- page/2/ -- has been canonicalized to the same page -- page/2/ points to page/2/ for example. The page/2/ and remaining pages also have this rel tags: I have also added "noindex,follow" to page/2/ and further -- Yoast does this automatically. Note: Yoast plugin also adds canonical to page/2/...page/3/ automatically. Same is the case with category pages and tag pages. Oh, and the author pages too -- they all have self-canonicalization, rel prev & rel next tags, and have been "noindex, followed." Problem: Am I doing this the way it should be done? I asked a Google Webmaster employee on rel next and prev tags, and this is what she said: "We do not recommend noindexing later pages, nor rel="canonical"izing everything to the first page." (My bad, last year I was canonicalizing pages to first page). One of the popular blog, a competitor, uses none of these tags. Yet they rank higher. Others following this format have been hit with every kind of Google algorithm I could think of. I want to leave it to Google to decide what's better, but then again, Yoast SEO plugin rules my blog -- okay, let's say I am a bad coder. Any help, suggestions, and thoughts are highly appreciated. 🙂 Update 1: Paginated pages -- including category pages and tag pages -- have unique snippets; no full-length posts. Thought I'd make that clear.

                        Technical SEO | | sidstar
                        0
                      • AlexThomas

                        Reliable Proxies

                        Can anyone recommend a reliable proxy service (paid or otherwise) to tunnel scraping requests through? I've been using free proxes which are sometimes a bit slow/ timeout or just refuse connections.

                        Technical SEO | | AlexThomas
                        0
                      • anchorwave

                        Best 404 Error Checker?

                        I have a client with a lot of 404 errors from Web Master Tools, and i have to go through and check each of the links because Some redirect to the correct page Some redirect to another url but its a 404 error Some are just 404 errors Does anyone know of a tool where i can dump all of the urls and it will tell me If the url is redirected, and to where if the page is a 404 or other error Any tips or suggestions will be really appreciated! Thanks SEO Moz'rs

                        Technical SEO | | anchorwave
                        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
                      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.