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?
-
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?
-
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
-
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
-
Got a burning SEO question?
Subscribe to Moz Pro to gain full access to Q&A, answer questions, and ask your own.
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.
Related Questions
-
What Tools Should I Use To Investigate Damage to my website
I would like to know what tools I should use and how to investigate damage to my website in2town.co.uk I hired a person to do some work to my website but they damaged it. That person was on a freelance platform and was removed because of all the complaints made about them. They also put in backdoors on websites including mine and added content. I also had a second problem where my content was being stolen. My site always did well and had lots of keywords in the top five and ten, but now they are not even in the top 200. This happened in January and feb. When I write unique articles, they are not showing in Google and need to find what the problem is and how to fix it. Can anyone please help
Technical SEO | | blogwoman10 -
In writing the url, it is better to use the language used by the people of my country or English?
We speak Persian and all people search in Persian on Google. But I read in some sources that the url should be in English. Please tell me which language to use for url writing?
Technical SEO | | ghesta
For example, I brought down two models: 1fb0e134-10dc-4737-904f-bfdf07143a98-image.png https://ghesta.ir/blog/how-to-become-rich/
2)https://ghesta.ir/blog/چگونه-پولدار-شویم/0 -
Should we use Cloudflare
Hi all, we want to speed up our website (hosted in Wordpress, traffic around 450,000 page views monthly), we use lots of images. And we're wondering about setting up on Cloudflare, however after searching a bit in Google I have seen some people say the change in IP, or possible sharing of Its with bad neighbourhoods, can really hit search rankings. So, I was wondering what the latest thinking is on this subject, would the increased speed and local server locations be a boost for SEO, moreso than a potential loss of rankings for changing IP? Thanks!
Technical SEO | | tiromedia1 -
Indexing Issue of Dynamic Pages
Hi All, I have a query for which i am struggling to find out the answer. I unable to retrieve URL using "site:" query on Google SERP. However, when i enter the direct URL or with "info:" query then a snippet appears. I am not able to understand why google is not showing URL with "site:" query. Whether the page is indexed or not? Or it's soon going to be deindexed. Secondly, I would like to mention that this is a dynamic URL. The index file which we are using to generate this URL is not available to Google Bot. For instance, There are two different URL's. http://www.abc.com/browse/ --- It's a parent page.
Technical SEO | | SameerBhatia
http://www.abc.com/browse/?q=123 --- This is the URL, generated at run time using browse index file. Google unable to crawl index file of browse page as it is unable to run independently until some value will get passed in the parameter and is not indexed by Google. Earlier the dynamic URL's were indexed and was showing up in Google for "site:" query but now it is not showing up. Can anyone help me what is happening here? Please advise. Thanks0 -
301 redirect: canonical or non canonical?
Hi, Newbie alert! I need to set up 301 redirects for changed URLs on a database driven site that is to be redeveloped shortly. The current site uses canonical header tags. The new site will also use canonical tags. Should the 301 redirects map the canonical URL on the old site to the corresponding canonical for the new design . . . or should they map the non canonical database URLs old and new? Given that the purpose of canonicals is to indicate our preferred URL, then my guess is that's what I should use. However, how can I be sure that Google (for example) has indexed the canonical in every case? Thx in anticipation.
Technical SEO | | ztalk1120 -
Screaming Frog Content Showing charset=UTF-8
I am running a site through Screaming Frog and many of the pages under "Content" are reading text/html; charset=UTF-8. Does this harm ones SEO and what does this really mean? I'm running his site along with this competitors and the competitors seems very clean with content pages reading text/html. What does one do to change this if it is a negative thing? Thank you
Technical SEO | | seoessentials0 -
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 | | DonnaDuncan0 -
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 | | EugeneF0