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.
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
-
Ali,
If you are on WordPress you can try some of these. First, set up the free Yoast SEO plugin if you have not already.
I have been working on this exact issue. The way Tags are set up (on the client site) we are getting duplicate pages. I am trying a couple of things:
-
In Yoast XML Sitemaps > Taxonomies you can set "Tags" to "Not in Sitemap". Removing them from the XML Sitemap will at least lessen the frequency that Google accesses Taged pages.
-
In Yoast Titles & Meta > Taxonomies you can select Index or Noindex for your Tags.
Following the Tag idea, you might get a 404 if a Tag is changed or deleted. It's hard to diagnose 404s without seeing them. Consider a custom 404 error page, if you have not already. That will at least improve the user experience. With htaccess you set different redirects and custome 404 pages depending on the site section.
Tags in WP don't seem to add much benefit, and probably cause more problems (like dupe content). Even if you are diligent with Tag consisitency, most blogs end up with nearly duplicate Tags.
There are many Moz posts on the topic of duplicate content in WP specific to Tags that might further illuminate your question.
Did you change anything universally, like switch to https? Missed redirects can cause a 404.
The WP Broken Links in Tools will direct you straight to the 404 pages.
Here are some more tips for dealing with 404 in WP:
http://www.wpbeginner.com/showcase/6-best-free-404-plugins-for-wordpress/The WP plugin "Redirection" is well regarded, but use caution with lots of ecomm url variables.
Hope this helps!
-
-
Hi Ali,
Are you on WordPress?
Jason
-
Hi Ali,
Please check the title of your pages, if they are same then those links would be counted as duplicates. Also, check how many duplicates are being reported in google webmaster, these are also good indicators for duplicate pages.
This link should help as well
http://moz.com/learn/seo/duplicate-content
& this is a link to a 301 redirect generator
http://www.htaccessredirect.com
Remember to also use a
Rel=Canonical put this tag in the correct page you want to show people.Then do a 301 redirect on the pages that are duplicates and point them on ONLY right one
As for 404, they will need to be reviewed and handled with 301 to map them to actual URL.
I hope this helps, please feel free to respond if you have further questions.
Regards,
Vijay
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
-
Duplicate Content and Subdirectories
Hi there and thank you in advance for your help! I'm seeking guidance on how to structure a resources directory (white papers, webinars, etc.) while avoiding duplicate content penalties. If you go to /resources on our site, there is filter function. If you filter for webinars, the URL becomes /resources/?type=webinar We didn't want that dynamic URL to be the primary URL for webinars, so we created a new page with the URL /resources/webinar that lists all of our webinars and includes a featured webinar up top. However, the same webinar titles now appear on the /resources page and the /resources/webinar page. Will that cause duplicate content issues? P.S. Not sure if it matters, but we also changed the URLs for the individual resource pages to include the resource type. For example, one of our webinar URLs is /resources/webinar/forecasting-your-revenue Thank you!
Technical SEO | | SAIM_Marketing0 -
Does anyone know the linking of hashtags on Wix sites does it negatively or postively impact SEO. It is coming up as an error in site crawls 'Pages with 404 errors' Anyone got any experience please?
Does anyone know the linking of hashtags on Wix sites does it negatively or positively impact SEO. It is coming up as an error in site crawls 'Pages with 404 errors' Anyone got any experience please? For example at the bottom of this blog post https://www.poppyandperle.com/post/face-painting-a-global-language the hashtags are linked, but they don't go to a page, they go to search results of all other blogs using that hashtag. Seems a bit of a strange approach to me.
Technical SEO | | Mediaholix0 -
Duplicate content through product variants
Hi, Before you shout at me for not searching - I did and there are indeed lots of threads and articles on this problem. I therefore realise that this problem is not exactly new or unique. The situation: I am dealing with a website that has 1 to N (n being between 1 and 6 so far) variants of a product. There are no dropdown for variants. This is not technically possible short of a complete redesign which is not on the table right now. The product variants are also not linked to each other but share about 99% of content (obvious problem here). In the "search all" they show up individually. Each product-variant is a different page, unconnected in backend as well as frontend. The system is quite limited in what can be added and entered - I may have some opportunity to influence on smaller things such as enabling canonicals. In my opinion, the optimal choice would be to retain one page for each product, the base variant, and then add dropdowns to select extras/other variants. As that is not possible, I feel that the best solution is to canonicalise all versions to one version (either base variant or best-selling product?) and to offer customers a list at each product giving him a direct path to the other variants of the product. I'd be thankful for opinions, advice or showing completely new approaches I have not even thought of! Kind Regards, Nico
Technical SEO | | netzkern_AG0 -
How to deal with duplicated content on product pages?
Hi, I have a webshop with products with different sizes and colours. For each item I have a different URL, with almost the same content (title tag, product descriptions, etc). In order to prevent duplicated content I'am wondering what is the best way to solve this problem, keeping in mind: -Impossible to create one page/URL for each product with filters on colour and size -Impossible to rewrite the product descriptions in order to be unique I'm considering the option to canonicolize the rest of de colours/size variations, but the disadvantage is that in case the product is not in stock it disappears from the website. Looking forward to your opinions and solutions. Jeroen
Technical SEO | | Digital-DMG0 -
404 Errors After Site Migration
Hello - I'm working on a website selling fashion accessories. The site just went through a site migration from Yahoo! to Big Commerce. Now we have a high level of warnings and errors from the crawl. Few are mentioning sites I never seen before on the Yahoo! platform. I also notice that the pages crawled has doubled. How can I fix or did I do something wrong with migration? I was running the website with minimal errors and now overwhelmed with errors all the error updates. If I can get some assistance on what could be wrong, I would greatly appreciate. Thanks.
Technical SEO | | ShopChameleon0 -
How much to change to avoid duplicate content?
Working on a site for a dentist. They have a long list of services that they want us to flesh out with text. They provided a bullet list of services, we're trying to get 1 to 2 paragraphs of text for each. Obviously, we're not going to write this off the top of our heads. We're pulling text from other sources and trying to rework. The question is, how much rephrasing do we have to do to avoid a duplicate content penalty? Do we make sure there are changes per paragraph, sentence, or phrase? Thanks! Eric
Technical SEO | | ericmccarty0 -
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.
Technical SEO | | Leighm0 -
CGI Parameters: should we worry about duplicate content?
Hi, My question is directed to CGI Parameters. I was able to dig up a bit of content on this but I want to make sure I understand the concept of CGI parameters and how they can affect indexing pages. Here are two pages: No CGI parameter appended to end of the URL: http://www.nytimes.com/2011/04/13/world/asia/13japan.html CGI parameter appended to the end of the URL: http://www.nytimes.com/2011/04/13/world/asia/13japan.html?pagewanted=2&ref=homepage&src=mv Questions: Can we safely say that CGI parameters = URL parameters that append to the end of a URL? Or are they different? And given that you have rel canonical implemented correctly on your pages, search engines will move ahead and index only the URL that is specified in that tag? Thanks in advance for giving your insights. Look forward to your response. Best regards, Jackson
Technical SEO | | jackson_lo0