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.

      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
      • 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. Canonical issues using Screaming Frog and other tools?

    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.

    Canonical issues using Screaming Frog and other tools?

    Technical SEO
    4
    3
    4024
    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.
    • Flock.Media
      Flock.Media last edited by

      In the Directives tab within Screaming Frog, can anyone tell me what the difference between "canonicalised", "canonical", and "no canonical" means? They're found in the filter box. I see the data but am not sure how to interpret them. Which one of these would I check to find canonical issues within a website? Are there any other easy ways to identify canonical issues?

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

        Hello 🙂

        I spotted this thread and was just about to reply, but Dirk has answered it all perfectly. Thanks Dirk!

        Under 'reports' there's also a 'canonical errors' report which will show canonicals with various technical issues - Those that are blocked by robots.txt, have no response, 3XX redirect, 4XX or 5XX error (essentially anything other than a 200 ‘OK’ response). It will also show any URLs discovered only via a canonical, that are not linked to internally from the sites own link structure (in the ‘unlinked’ column when ‘true’).

        Hope that helps anyway.

        Cheers!

        Dan

        1 Reply Last reply Reply Quote 2
        • DirkC
          DirkC last edited by

          Hi,

          The difference between them

          • canonical : url has a canonical url - which can be self-referencing (canonical url = url) or not

          • canonicalised: url has a canonical url which is not self-referencing (canonical url <> url)

          • no canonical : quite obvious - the url has no canonical.

          Potential issues could be - url's that you would like to have a canonical don't have a canonical or url's that are canonicalised don't have the right canonical url. You can use the lists (both canonicalised & no canonical) from Screaming Frog to check them - but it's up to you to judge whether the canonical is ok or not (no automated tool can guess what your intentions are).
          Typical mistakes with canonicals: all url's have the same canonical url (like the homepage), or have canonical url's that do not exist. You could also check this with Screaming Frog using the setting "respect canonicals" - this way only the canonical url's will be shown in the listing.

          Also keep in mind that canonical url's are merely a friendly request to Google to index the canonical rather than the normal url - but it's not an obligation for Google to do this (check https://support.google.com/webmasters/answer/139066?hl=en quote: "the search results will be more likely to show users that URL structure. (Note: We attempt to respect this, but cannot guarantee this in all cases.)"

          Dirk

          1 Reply Last reply Reply Quote 5
          • 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

          • denakalami

            My backlinks are not showing in webmaster tools? Why

            Hi Experts, I have follow backlinks from a domain for 6 months, but its not apear in Links to Your Site tools (search console) that domain has 302k indexed pages in google! Could you please explain me why google not showing this type of backlinks?

            Technical SEO | | denakalami
            7
          • 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
          • SeaCandyTackle

            Rel=canonical Weebly

            My problem is with my website as it says I have duplicate page titles and contents because of a /index.html. It says the duplicate content is due to the fact that my homepage on my website is www.seacandytackle.com but it is also www.seacandytackle.com/index.html because I use weebly. How can I use the tag to fix this? It won't let me do a 301 redirect because it is a home page. How can I fix this? What code would I have to use and which url? Also it says that I have duplicate page content between http://www.seacandytackle.com/index.html and http://www.seacandytackle.comhttp://www.seacandytackle.com but I don't recall having any page that looks like http://www.seacandytackle.com http://www.seacandytackle.com from weebly. How can I fix this issue as well? Thank you for any help. Step by step implementation would be particularly helpful in using the rel= tags to fix these duplicate issues.

            Technical SEO | | SeaCandyTackle
            0
          • DonnaDuncan

            Exclude status codes in Screaming Frog

            I have a very large ecommerce site I'm trying to spider using screaming frog. Problem is I keep hanging even though I have turned off the high memory safeguard under configuration. The site has approximately 190,000 pages according to the results of a Google site: command. The site architecture is almost completely flat. Limiting the search by depth is a possiblity, but it will take quite a bit of manual labor as there are literally hundreds of directories one level below the root. There are many, many duplicate pages. I've been able to exclude some of them from being crawled using the exclude configuration parameters. There are thousands of redirects. I haven't been able to exclude those from the spider b/c they don't have a distinguishing character string in their URLs. Does anyone know how to exclude files using status codes? I know that would help. If it helps, the site is kodylighting.com. Thanks in advance for any guidance you can provide.

            Technical SEO | | DonnaDuncan
            0
          • EugeneF

            Use webmaster tools "change of address" when doing rel=canonical

            We are doing a "soft migration" of a website.  (Actually it is a merger of two websites). We are doing cross site rel=canonical tags instead of 301's for the first 60-90 days.  These have been done on a page by page basis for an entire site.  Google states that a "change of address" should be done in webmaster tools for a site migration with 301's.   Should this also be done when we are doing this soft move?

            Technical SEO | | EugeneF
            0
          • Stroll

            MBG Tracker...how to use it?

            So I am a new blogger that has been submitting guest blog posts to a number of different blogs. It was recommended that I use the MBG Tracker so I can track the back links. The problem is that I am totally lost on how to use this tool. As I said before I am new to this whole thing and I am not really sure what constitutes a "base link" and a "back link." In the author bylines we are linking to different pages within a larger website. If anyone can help me I would really appreciate it!

            Technical SEO | | Stroll
            0
          • upick-162391

            Trailing Slashes In Url use Canonical Url or 301 Redirect?

            I was thinking of using 301 redirects for trailing slahes to no trailing slashes for my urls. EG: www.url.com/page1/ 301 redirect to www.url.com/page1 Already got a redirect for non-www to www already. Just wondering in my case would it be best to continue using htacces for the trailing slash redirect or just go with Canonical URLs?

            Technical SEO | | upick-162391
            0
          • seoug_2005

            Robots.txt and canonical tag

            In the SEOmoz post - http://www.seomoz.org/blog/robot-access-indexation-restriction-techniques-avoiding-conflicts, it's being said - If you have a robots.txt disallow in place for a page, the canonical tag will never be seen. Does it so happen that if a page is disallowed by robots.txt, spiders DO NOT read the html code ?

            Technical SEO | | seoug_2005
            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.