undefined
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.

    Track AI Overviews in Keyword Research
    Moz Pro

    Track AI Overviews in Keyword Research

    Try it free!
  • 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. Does a CDN affect search rankings?

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.

Does a CDN affect search rankings?

Technical SEO
5
7
10.3k
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.
  • Hyrule
    Hyrule last edited by Jun 27, 2011, 8:15 PM

    I feel kind of stupid asking this, but if i use one it would speed things up quite a bit. It is for a ecommerce website, any guidance on this would be awesome!

    1 Reply Last reply Reply Quote 0
    • Igal_Zeifman
      Igal_Zeifman last edited by Aug 2, 2012, 5:57 AM Aug 2, 2012, 5:57 AM

      Google officially said the site speed is a SEO factor which, when implemented, will affect 1% of SERP results. This gives some idea of the scope of it's relevancy. (not saying 1% is either high or low, this is all very subjective)

      Having said that, beyond speed improvement, CDN provides other SEO related benefits.

      I've actually just published a 2-part Blog post that investigates SEO & CDN related myths and talks about CDN and SEO benefits, I hope you`ll find it useful. it should answer all questions:

      Part 1: SEO & CDN Myths
      Part 2: SEO & CDN benefits

      1 Reply Last reply Reply Quote 2
      • topic:timeago_earlier,about a year
      • Highland
        Highland @Hyrule last edited by Jun 28, 2011, 10:10 AM Jun 28, 2011, 10:10 AM

        I use a CDN and have never seen any impact on my SEO. As long as your HTML is served off your domain you're fine.

        If you're using AWS Cloudfront you can set up a CNAME so that your content comes from, say, images.mydomain.com instead of xyz.cdn.com. Helps obscure it from visitors and looks a bit neater.

        1 Reply Last reply Reply Quote 1
        • RyanKent
          RyanKent last edited by Jun 27, 2011, 9:32 PM Jun 27, 2011, 9:32 PM

          Using a properly configured CDN will not have any negative effects on SEO. It can have positive effects on your rankings by offering faster page loads.

          With Google's current system, you would not see a SEO benefit per se. If your current site is deemed slow by Google, you could have your current speed penalty lifted.

          Moving to a CDN will surely provide a better user experience. Google is constantly adjusting it's algorithms in chase of the best user experience, so this is a chance for you to get ahead of the game. It is reasonable to think in the future Google may consider site speed as a ranking factor.

          Two other suggestions regarding setting up a CDN:

          • you need to be very conscious of your cache settings. You could make a change on your site and users will not see the change if you do not ensure that change is propagated throughout your CDN

          • try to include all files which would benefit from a CDN. I have seen some sites just add their videos and image files to the CDN. Custom Javascript, CSS files and so forth can all benefit from CDN. PageSpeed and YSlow are two great tools for optimizing page loading times.

          1 Reply Last reply Reply Quote 1
          • brycebertola
            brycebertola @Hyrule last edited by Jun 27, 2011, 9:11 PM Jun 27, 2011, 9:11 PM

            As far as I know, the urls of your additional resources such as images, css, and scripts shouldn't affect your SEO either way.

            1 Reply Last reply Reply Quote 0
            • Hyrule
              Hyrule @brycebertola last edited by Jun 27, 2011, 9:06 PM Jun 27, 2011, 9:06 PM

              But, does the use of a Content Delivery Network (cdn) itself affect seo? For example my pics / code will be hosted differently. Just kind of confusing to me since I'm used to URL structure being: mydomain.com/images/pic.jpg instead of xyz.cdn.com/2523/myname/pic.jpg. Is this even something to be concerned about?

              brycebertola Highland 2 Replies Last reply Jun 28, 2011, 10:10 AM Reply Quote 0
              • brycebertola
                brycebertola last edited by Jun 27, 2011, 8:37 PM Jun 27, 2011, 8:37 PM

                Site speed is only relevant when your site is extremely slow. Google doesn't penalize you unless your page load time is excessively long. You won't get a boost in rankings by speeding up your site.

                With that in mind, Site load times do affect your user experience, so you may notice a lower bounce rate, more pages per visit, and possibly a higher conversion rate.

                Hyrule 1 Reply Last reply Jun 27, 2011, 9:06 PM Reply Quote 0
                • 1 / 1
                1 out of 7
                • First post
                  1/7
                  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

                • TNZ

                  Google not Indexing images on CDN.

                  My URL is: https://bit.ly/2hWAApQ We have set up a CDN on our own domain: https://bit.ly/2KspW3C We have a main xml sitemap: https://bit.ly/2rd2jEb and https://bit.ly/2JMu7GB is one the sub sitemaps with images listed within. The image sitemap uses the CDN URLs. We verified the CDN subdomain in GWT. The robots.txt does not restrict any of the photos: https://bit.ly/2FAWJjk. Yet, GWT still reports none of our images on the CDN are indexed. I ve followed all the steps and still none of the images are being indexed. My problem seems similar to this ticket https://bit.ly/2FzUnBl but however different because we don't have a separate image sitemap but instead have listed image urls within the sitemaps itself. Can anyone help please? I will promptly respond to any queries. Thanks
                  Deepinder

                  Technical SEO | May 2, 2018, 12:55 PM | TNZ
                  0
                • rijwielcashencarry040

                  Remove sitemap, effect ranking?

                  We are considering to remove our sitemap because it doesn't display the right structure. Will it affect current rankings if we remove the sitemap en continuing without a sitemap? Thanks

                  Technical SEO | Jun 12, 2015, 2:18 PM | rijwielcashencarry040
                  0
                • McFaddenGavender

                  "Search Box Optimization"

                  A client of ours recently received en email from a random SEO "company" claiming they could increase website traffic using a technique known as "search box optimization". Essentially, they are claiming they can insert a company name into the autocomplete results on Google. Clearly, this isn't a legitimate service - however, is it a well known technique? Despite our recommendation to not move forward with it, the client is still very intrigued. Here is a video of a similar service:
                  https://www.youtube.com/watch?v=zW2Fz6dy1_A

                  Technical SEO | Jun 30, 2014, 8:48 PM | McFaddenGavender
                  0
                • CalicoKitty2000

                  Wordpress versus html and google ranking

                  My current SEO has always recommended that I take my site to wordpress.  I really don't want to move to wordpress.  I don't like it... I just like writing code in raw html, css, and script.  I feel like I have more control that way. Wordpress just seems like a platform for blogs (I have my blog in wordpress). My question is, do wordpress websites typically rank better? Is there benefit to moving to it?

                  Technical SEO | May 31, 2014, 10:50 AM | CalicoKitty2000
                  0
                • FDFPres

                  Google ranking my site abroad, how to stop?

                  Hi Mozzers, I have a UK based ecommerce site, that sells only to the UK.  Over the last month Google has started ranking my site on foreign flavours of Google, so I keep getting traffic coming to my site from Europe, America and the far east that we could never sell to, and as a result bounce is going up and engagement is going down. They are definitely coming to the site from google searches that relate to my product type, but in regions I do not service. Is there a way to stop google doing this?  I have the target set to UK in WMT, but is there anything else I can do?  I worried about my UK ranking being damaged by an increasing overall bounce rate. Thanks

                  Technical SEO | Feb 27, 2013, 2:34 PM | FDFPres
                  0
                • Scott-Thomas

                  CDN Being Crawled and Indexed by Google

                  I'm doing a SEO site audit, and I've discovered that the site uses a Content Delivery Network (CDN) that's being crawled and indexed by Google. There are two sub-domains from the CDN that are being crawled and indexed. A small number of organic search visitors have come through these two sub domains. So the CDN based content is out-ranking the root domain, in a small number of cases. It's a huge duplicate content issue (tens of thousands of URLs being crawled) - what's the best way to prevent the crawling and indexing of a CDN like this? Exclude via robots.txt? Additionally, the use of relative canonical tags (instead of absolute) appear to be contributing to this problem as well. As I understand it, these canonical tags are telling the SEs that each sub domain is the "home" of the content/URL. Thanks! Scott

                  Technical SEO | Feb 6, 2013, 4:56 PM | Scott-Thomas
                  0
                • sparts

                  Why is my site jumping around in google search ?

                  Hi I've been trying to get my page up in google results and I was wondering why the constant fluctuation. For example, on one day the pages is nr. 26, the next day it's nr. 65 then jumps back on say 30 and then in a few more days it's going back to 50. What's the logic behind that ? Thanks Cezar

                  Technical SEO | Oct 16, 2012, 1:43 PM | sparts
                  1
                • sandlappercreative

                  Sudden ranking drop, no manual action

                  Sort of a strange situation I'm having and I wanted to see if I could get some thoughts. Here's what has happened... Monday morning, I realized that my website, which had been showing up at the bottom of page 2 for a specific result, had now been demoted to the bottom of page 6 (roughly a 40 spot demotion). No other keyword searches were affected. I immediately figured that this was some sort of keyword-specific penalty that I had incurred. I had done a bit of link building over the weekend (two or three directory type sites and a bio link from a site I contribute to). I also changed some anchor text on another site to match my homepage's title tag (which just so happened to be the exact phrase match I had dropped in) - I assumed this was what got me. I was slowly beginning to climb up the rankings and just got a bit impatient/overzealous. Changed the anchor text back to what it originally was and submitted a reconsideration request on Tuesday. This morning, I get the automated response in Webmaster Tools that no manual action had been taken. So my question is, would this drop have been an automated deal? If that's the case, then it's going to be mighty hard to pinpoint what I did wrong, since there's no way to know when I did whatever it was to cause the drop. Any ideas/thoughts/suggestions to regain my modest original placement?

                  Technical SEO | Nov 28, 2011, 8:58 PM | sandlappercreative
                  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.