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.
Should there be a canonical tag on my 404 error page?
-
In my crawl diagnostics, I notice some 4xx client errors. They are appearing for pages that no longer exist, so I'm not sure what the problem is. Shouldn't they just be dealt as 404's?
Anyway, on closer inspection I noticed that my 404 error page contains a canonical tag which points to the missing page. Could this be the issue? Is it a good idea to remove the canonical tag from this error page?
Thanks.
-
I repeated this elsewhere, but I think canonical on 404 page does make sense, especially if you consider the following two statements true:
- There is a reason for 404s, don't 301 everything
- There is no reason to lose the value of someone linking to your page.
If those 2 statements are true then you should create an individual error page, and then everytime you serve a 404 you should include canonical to that error page. That page should have useful content (explanation of page missing and where you could go), probably a search box, and links to the most valuable content on your site. This satisfies both points.
-
1 there is no point having canonical on a 404 page. I would say its a very confusing signal to bots
2 don't always 301. 404 exists for a reason. In most cases I will 301 old pages but there are cases where letting pages 404 is the correct way forward
-
If the old pages are NOINDEX, are the old inbound links still passed on to the new page via the 301's. and is the google juice passed? I've wanted to do exactly what you suggest, but was afraid of severing the Linking credit from those old inbounds.
-
The canonical tag on errorpages make no sense! For gone webpages just setup a 301 redirect in the .htaccess. And make use of the Google webmaster tools to identify waht Google sees.
-
Discovering 404s can be useful.
Is the old page deleted? Why not 301 redirect the URL to an appropriate page elsewhere on your site? Tools such as Screaming Frog's SEO Spider can crawl your website and help you discover 404s. By redirecting the page with a permanent redirect search engines will to pass any link juice the previous page had to the new page. Redirecting will also cleanup your pages in the SERPs and help with any broken internal links on your site (though it'd be better to fix those).
There's no need to having a rel=canonical tag on a 404 page (but if you do, ensure the tag is for the page itself and not actual content on your site).
There's also no need for search engines to index your 404 page, so I suggest adding the meta NOINDEX tag to the page.
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
-
Broken canonical link errors
Hello, Several tools I'm using are returning errors due to "broken canonical links". However, I'm not too sure why is that. Eg.
Technical SEO | | GhillC
Page URL: domain.com/page.html?xxxx
Canonical link URL: domain.com/page.html
Returns an error. Any idea why? Am I doing it wrong? Thanks,
G1 -
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 | | jessicarcf0 -
Duplicate content and 404 errors
I apologize in advance, but I am an SEO novice and my understanding of code is very limited. Moz has issued a lot (several hundred) of duplicate content and 404 error flags on the ecommerce site my company takes care of. For the duplicate content, some of the pages it says are duplicates don't even seem similar to me. additionally, a lot of them are static pages we embed images of size charts that we use as popups on item pages. it says these issues are high priority but how bad is this? Is this just an issue because if a page has similar content the engine spider won't know which one to index? also, what is the best way to handle these urls bringing back 404 errors? I should probably have a developer look at these issues but I wanted to ask the extremely knowledgeable Moz community before I do 🙂
Technical SEO | | AliMac260 -
Does Title Tag location in a page's source code matter?
Currently our meta description is on line 8 for our page - http://www.paintball-online.com/Paintball-Guns-And-Markers-0Y.aspx
Technical SEO | | IstoresincThe title tag, however sits below a bunch of code on line 237
Does the location of the title tag, meta tags, and any structured data have any influence with respect to SEO and search engines? Put another way, could we benefit from moving the title tag up to the top? I "surfed 'n surfed" and could not find any articles about this. I would really appreciate any help on this as our site got decimated organically last May and we are looking for any help with SEO. NIck
0 -
Two META Robots tags on a page - which will win?
Hi, Does anybody know which meta-robots tag will "win" if there is more than one on a page? The situation:
Technical SEO | | jmueller
our CMS is not very flexible and so we have segments of META-Tags on the page that originate from templates.
Now any author can add any meta-tag from within his article-editor.
The logic delivering the pages does not care if there might be more than one meta-robots tag present (one from template, one from within the article). Now we could end up with something like this: Which one will be regarded by google & co?
First?
Last?
None? Thanks a lot,
Jan0 -
Google's "cache:" operator is returning a 404 error.
I'm doing the "cache:" operator on one of my sites and Google is returning a 404 error. I've swapped out the domain with another and it works fine. Has anyone seen this before? I'm wondering if G is crawling the site now? Thx!
Technical SEO | | AZWebWorks0 -
URL query strings and canonical tag
Hi, I have recently been getting my comparison website redesigned and developed onto wordpress and the site is now 90% complete. Part of the redesign has meant that there are now dynamic urls in the format: http://www.mywebsite.com/10-pounds-productss/?display=cost&value=10 I have other pages similar to this but with different content for the different price ranges and these are linked to from the menus: http://www.mywebsite.com/20-pounds-products/?display=cost&value=20 Now my questions are: 1. I am using Joost's All-in-one SEO plugin and this adds a canonical tag to the page that is pointing to http://www.mywebsite.com/10-pounds-products/ which is the permalink. Is this OK as it is or should i change this to http://www.mywebsite.com/10-pounds-products/?display=cost&value=10 2. Which URL will get indexed, what gets shown as the display URL in the SERPs and what page will users land on? I'm a bit confused so apologies if these seem like silly questions. Thanks
Technical SEO | | bizarro10000 -
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_20050