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.

      Enhance Keyword Discovery with Bulk Analysis
      Moz Pro

      Enhance Keyword Discovery with Bulk Analysis

      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

      Access 20 years of data with flexible pricing
      Moz API

      Access 20 years of data with flexible pricing

      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. 301 redirect: canonical or non canonical?

    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.

    301 redirect: canonical or non canonical?

    Technical SEO
    3
    5
    1131
    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.
    • ztalk112
      ztalk112 last edited by

      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.

      1 Reply Last reply Reply Quote 0
      • David-Kley
        David-Kley last edited by

        The most accurate way is to do it manually. Doing a site:YOURDOMAIN.com in Google will alert you to most of the ugly URLs you want to get rid of.

        1 Reply Last reply Reply Quote 0
        • ztalk112
          ztalk112 @David-Kley last edited by

          Thanks for that David . . . makes sense.

          Can you recommend any tools to help with this job or is it still mostly a manual process?

          Cheers.

          1 Reply Last reply Reply Quote 0
          • David-Kley
            David-Kley last edited by

            "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?"

            Any URL's that are indexed should be redirected to the correct version. For example if you have both a database URL and a canonical URL both indexed in search results, then they both should be sent to the correct version.

            Also, having only canonical URLs in your submitted sitemaps will help to remove a lot of these, even without redirects.

            ztalk112 1 Reply Last reply Reply Quote 1
            • MoosaHemani
              MoosaHemani Banned last edited by

              Ok, here is my understanding regarding canonicals and how it works with redirect. 301 redirect means the old URL is shifting its all value and user to the new domain (unlike 302 that only derives traffic but contain the URL value to itself only).

              Whereas Canonicals indicates Google the preferred version of the domain so theoretically if you use the canonicals on every page Google should pick the redirected page as 301 will take Google to the final destination anyways…

              What will I do?

              If Possible, I will map all the redirected URLs and remove canonicals from there just to be on the safe side but I don’t think having there will be much of a difference as Google as at least that smart.

              Hope this helps!

              1 Reply Last reply Reply Quote 0
              • 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

              • LouisPortier

                Redirection chain and Javascript Redirect

                Hi, A redirection chain is usually defined as a page redirecting to another page which itself is another redirection. URL1 ---(301/302)---> URL2 ---(301/302)---> URL3 But what about Javascript redirect? They seem to be a different beast: URL1 ---(301/302)---> URL2 ---(200 then Javascript redirect)---> URL3 From what I know if the javascript redirect is instant Google counts it as a 301 permanent redirection, but I'm still not sure about if this counts as a redirection chain. Most of the tools (such as moz) only see the first redirection. So is that scenario a redirection chain or no?

                Technical SEO | | LouisPortier
                0
              • AL123al

                Redirect URLS with 301 twice

                Hello, I had asked my client to ask her web developer to move to a more simplified URL structure. There was a folder called "home" after the root which served no purpose. I asked for the URLs to be redirected using 301 to the new URLs which did not have this structure. However, the web developer didn't agree and decided to just rename the "home" folder "p". I don't know why he did this. We argued the case and he then created the URL structure we wanted. Initially he had 301 redirected the old URLS (the one with "Home") to his new version (the one with the "p"). When we asked for the more simplified URL after arguing, he just redirected all the "p" URLS to the PAGE NOT FOUND.  However, remember, all the original URLs are now being redirected to the PAGE NOT FOUND as a result. The problems I see are these unless he redirects again: The new simplified URLS  have to start from scratch to rank 2)We have duplicated content - two URLs with the same content Customers clicking products in the SERPs will currently find that they are being redirect to the 404 page. I understand that redirection has to occur but my questions are these: Is it ok to redirect twice with 301 - so old URL to the  "p" version then to final simplified version. Will link juice be lost doing this twice? If he redirects from the original URLS to the final version missing out the "p" version, what should happen to the "p" version - they are currently indexed. Any help would be appreciated. Thanks

                Technical SEO | | AL123al
                0
              • Houdoe

                CNAME vs 301 redirect

                Hi all, Recently I created a website for a new client and my next job is trying to get them higher in Google. I added them in OSE and noticed some strange backlinks. To my surprise the client has about 20 domain names. All automatically poiting to (showing) the same new mainsite now. www.maindomain.nl www.maindomain.be
                www.maindomain.eu
                www.maindomain.com
                www.otherdomain.nl
                www.otherdomain.com
                ... Some of these domains have backlinks too (but not so much). I suggested to 301 redirect them all to the main site. Just to avoid duplicate content. But now the webhoster comes into play: "It's a problem, client has only 1 hosting account, blablabla...". They told me they could CNAME the 20 domains to the main domain. Or A-record them to an IP address. This is too technical stuff for me. So my concrete questions are: Is it smart to do anything at all or am I just harming my client? The main site is ranking pretty well now. And some backlinks are from their copy sites (probably because everywhere the logo links to the full mainsite url). Does the CNAME or A-record solution has the same effect as a 301 redirect, from SEO perspective? Many thanks,
                Hans

                Technical SEO | | Houdoe
                0
              • aactive

                Simple 301 redirect a subfolder to another subfolder

                Hi, I have a number of sub-folders that I have to move, each of which contains a number of files. subfolder A has files a, b & c subfolder B has files d, e & f
                subfolder C has files g, h & i A, B & C folders need to be X, Y & Z Will the following work? RewriteRule ^subfolder-A/* http://www.domain.com/subfolder-X/ [R=301,L]
                RewriteRule ^subfolder-B/* http://www.domain.com/subfolder-Y/ [R=301,L]
                RewriteRule ^subfolder-C/* http://www.domain.com/subfolder-Z/ [R=301,L] will this result in visitors to http://www.domain.com/subfolder-B/f.html being redirected to http://www.domain.com/subfolder-Y/f.html? All on the same domain. in reality we are talking hundreds of sub folders and thousands of files so we don't want to have to reference every file individually in the htaccess. Thanks

                Technical SEO | | aactive
                0
              • kellymandingo

                301 Redirect How Long until the juice passes through to new site

                Hi Guys, Following on from a question i asked last week in regard to a 301 http://www.seomoz.org/q/301-redirect-have-no-ranking I was thinking that i had some kind of issue on the site, although i have gone over it with a fine tooth comb i cannot find any issue's and from the amount of reads the thread has had im sure if there was something obvious it would have been pointed out. So i am quite confident the 301 from site A to site B is fine and working as intended, so my question is how long should it take until the juice is passed From site A to Site B as its 9 weeks now and still down 85% on traffic and even text for my home page if copied into the search bar don't bring up my site Bing is fine and did not see any real traffic drops but Google is not giving me back the rankings i had prior Whenever i have done a 301 before the rankings pretty steady and i see no real loss in rankings but this time ... painful all changes in WMT made
                Canonical tag implemented
                all Pages 301 and correct 200 response from the targeted page
                Sitemap Updated
                Many Links Changed from Old site to new (including DMOZ)
                no Robots text Blocking directory's 
                Google crawling freely and regularly The strange thing is New content is indexed immediately and ranks easily, I added a page for my service in my local area and went straight to position 5 in Google however old existing content wont move, I tracked 150 keywords only 4 are top 75 Don't know what else to do  so any advice would be much appreciated PS site is around 17k pages Paul

                Technical SEO | | kellymandingo
                0
              • socialtowards

                How long should I keep 301 redirects?

                I have modified a the URL structure of a whole section of a website and used mod_rewrite 301 redirect to match the new structure. Now that was around 3 months ago and I was wondering how long should I keep this redirect for? As it is a new website I am quite sure that there are no links around with the old URL structure but still I can see the google bot trying from time to time to access the old URL structure. Shouldn't the google bot learn from this 301 redirect and not go anymore for the old URL?

                Technical SEO | | socialtowards
                0
              • blakadz

                Redirect non-www if using canonical url?

                I have setup my website to use canonical urls on each page to point to the page i wish Google to refer to. At the moment, my non-www domain name is not redirected to www domain. Is this required if i have setup the canonical urls? This is the tag i have on my index.php page rel="canonical" href="http://www.mydomain.com.au" /> If i browse to http://mydomain.com.au should the link juice pass to http://www.armourbackups.com.au? Will this solve duplicate content problems? Thanks

                Technical SEO | | blakadz
                0
              • Adrian_Kingwell

                What tools produce a complete list of all URLs for 301 redirects?

                I am project managing the rebuild of a major corporate website and need to set up 301 redirects from the old pages to the new ones. The problem is that the old site sits on multiple CMS platforms so there is no way I can get a list of pages from the old CMS. Is there a good tool out there that will crawl through all the sites and produce a nice spreadsheet with all the URLs on it? Somebody mentioned Xenu but I have never used it. Any recommendations? Thanks -Adrian

                Technical SEO | | Adrian_Kingwell
                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
              • Digital Marketers
              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.