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
      • SEO Q&A
      • Webinars, Whitepapers, & Guides
    • Blog
    • Why Moz
      • Agency Solutions
      • Enterprise Solutions
      • Small Business Solutions
      • Case Studies
      • 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.

      NEW Keyword Suggestions by Topic
      Moz Pro

      NEW Keyword Suggestions by Topic

      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.

      • SEO Q&A

        Insights & discussions from an SEO community of 500,000+.

      Unlock flexible pricing & new endpoints
      Moz API

      Unlock flexible pricing & new endpoints

      Find your plan
    • Blog
    • Why Moz
      • 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.

      • Case Studies

        Explore how Moz drives ROI with a proven track record of success.

      • 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. Research & Trends
    3. Algorithm Updates
    4. W3C Validation: How Important is This to Ranking

    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.

    W3C Validation: How Important is This to Ranking

    Algorithm Updates
    10
    15
    24318
    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.
    • maxcarnage
      maxcarnage last edited by

      Hi,

      I'm currently working with a developer who is trying to tell me that validation errors and warnings are of little to no importance in a website's SERP.

      In the past, whenever I've had a site that was experiencing problems ranking for a keyword terms, this was one of the first places we'd look.

      Is this still a relatively important component in getting a site to rank?

      1 Reply Last reply Reply Quote 2
      • Bryan_Loconto
        Bryan_Loconto @maxcarnage last edited by

        Absolutely! I will dig into this tonight and give you my honest feedback. Something I did notice that I would make a top priority is the load time of the page/site.

        Upon opening the page, I noticed it took a quite a bit to load. After running through Pingdom & Page Speed Insights (links below), I'd make the load time fixes a top priority for your developer.

        Pingdom Test Results

        Google Page Speed Insights

        I would jump all over these first and foremost but I will look through the html errors tonight and get back to you!

        1 Reply Last reply Reply Quote 0
        • maxcarnage
          maxcarnage @Bryan_Loconto last edited by

          Bryan,

          I'm going to give you an example of one of the site pages after I run it through W3C validator. Would you mind having a look at it and telling me how highly I should prioritize fixing these issues?

          http://validator.w3.org/check?uri=http%3A%2F%2Fwww.lawtonmd.com%2Fprocedures%2Fbreasts%2Faugmentation&charset=%28detect+automatically%29&doctype=Inline&group=0

          The developer I'm working with on this site is telling me that these issues are a very low priority, but as I'm seeing throughout the threads, his lack of interest in repairing these issues is of some concern to me.

          Bryan_Loconto 1 Reply Last reply Reply Quote 1
          • adamxj2
            adamxj2 @JVRudnick last edited by

            Exactly…. Google is the first one that comes to mind!

            1 Reply Last reply Reply Quote 1
            • JVRudnick
              JVRudnick last edited by

              What Egol said is quite true...this has been debated for years....but those of us who don't care about the validations rank our own or our clients sites quite nicely.

              Oh sidebar - you'd be so surprised to learn what kind of HUGE well known sites won't validate either....

              adamxj2 1 Reply Last reply Reply Quote 1
              • Bryan_Loconto
                Bryan_Loconto @webmethod last edited by

                Man... That's what I'm talking about George!! 😃

                1 Reply Last reply Reply Quote 2
                • adamxj2
                  adamxj2 @webmethod last edited by

                  Indeed! I'd be more concerned as a developer that there are glitches even if it won't affect SEO. Bad business

                  1 Reply Last reply Reply Quote 2
                  • IM_Learner
                    IM_Learner last edited by

                    I would worry more about Google guidelines and best practices rather than wasting time on W3C validation.

                    1 Reply Last reply Reply Quote 1
                    • webmethod
                      webmethod last edited by

                      A developer who tells you "W3C validation isn't important" is like a house builder telling you "Those small cracks in the walls are nothing to worry about"

                      George

                      adamxj2 Bryan_Loconto 2 Replies Last reply Reply Quote 4
                      • MoosaHemani
                        MoosaHemani Banned @EGOL last edited by

                        I will totally agree with EGOL's idea. If the website speed time is fine you don't really have to go for all the non important code ethics and everything.

                        1 Reply Last reply Reply Quote 0
                        • Travis_Bailey
                          Travis_Bailey last edited by

                          Seconding EGOL's statement, for the most part.

                          Years ago, The Matt Cutts stated W3C valid code wasn't a ranking factor. There's been a bit of debate over the years, but there still isn't much evidence to support W3C validation itself as a ranking factor. So it's something you probably can put on the back burner for more pressing concerns.

                          Honestly, sometimes errors are flagged simply because a comment or two are a little wonky. But that won't really inhibit how competitive a site is. If the site has 'quite a few' errors and warnings, that could potentially decrease site speed. Site speed is a ranking factor.

                          I suppose my best answer is; "No, it's not a ranking factor itself. Though there's some potential for poor coding to harm something that is a ranking factor."

                          1 Reply Last reply Reply Quote 2
                          • EGOL
                            EGOL last edited by

                            W3C Validation: How Important is This to Ranking?

                            It depends who you ask.

                            If you ask one of the W3C evangelists they will tell you that you will never get good rankings without it and that google will penalize your website and not allow it to be seen in certain countries.

                            If you ask people who really know about this stuff they will tell you that if your site renders well in most browsers you will do fine in search.

                            MoosaHemani 1 Reply Last reply Reply Quote 4
                            • adamxj2
                              adamxj2 last edited by

                              Hello

                              While there are good reasons to validate your code, it does not directly affect your rankings. Matt Cutts talks about this in a video: https://www.youtube.com/watch?v=FPBACTS-tyg

                              Validation does give insight into your development needs and will help you to improve user experience. However broken code won't take away from good content and that is primarily what search engines are looking for.

                              1 Reply Last reply Reply Quote 2
                              • Bryan_Loconto
                                Bryan_Loconto last edited by

                                Hey luckybluebox!

                                IMO, this is rather important aspect of proper development and we make sure every site we work on is W3C compliant. These are typically easy fixes and should always be cleaned up.

                                Check out this youtube video from Google Webmasters channel. They say it is NOT a ranking factor but I would always suggest keeping things tidy 😃

                                Hope this helps you out!!! https://www.youtube.com/watch?v=2XlKn6I9rSc

                                maxcarnage 1 Reply Last reply Reply Quote 2
                                • Shakur
                                  Shakur last edited by

                                  Hey ya! You can find a great disccusion right here www.searchenginejournal.com/w3c-validation-for-seo-myth-and-reality/18566/

                                  1 Reply Last reply Reply Quote 3
                                  • 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

                                  • sarahwalsh

                                    Huge ranking flux that we cannot explain

                                    algorithm updates

                                    Hello, SEO experts from around the world. We need your help; we have seen massive ranking flux across our website and others. We cannot explain what is causing this ranking flux. The content marketing is top quality, so we don’t know why we are moving from 25 to 50th on Google and sometimes even beyond that. Can any SEO experts explain why our agency is moving so much within Google’s rankings? We don’t know whether to make changes or possibly wait. Any help would be fantastic; thank you all.

                                    Algorithm Updates | | sarahwalsh
                                    0
                                  • BFMichael

                                    Does an EAT score on my YMYL site impact my rankings?

                                    I've read some conflicting information on YMYL and EAT.  If the Google Quality Raters are out there reviewing YMYL pages and scoring them on EAT, does that site's score have an impact on that page's/site's ranking?

                                    Algorithm Updates | | BFMichael
                                    0
                                  • vtmoz

                                    Log-in page ranking instead of homepage due to high traffic on login page! How to avoid?

                                    Hi all, Our log-in page is ranking in SERP instead of homepage and some times both pages rank for the primary keyword we targeted. We have even dropped. I am looking for a solution for this. Three points here to consider is: Our log-in page is the most visited page and landing page on the website. Even there is the primary keyword in this page or not; same scenario continues Log-in page is the first link bots touch when they crawling any page of our website as log-in page is linked on top navigation menu If we move login page to sub-domain, will it works? I am worrying that we loose so much traffic to our website which will be taken away from log-in page sub domain Please guide with your valuable suggestions. Thanks

                                    Algorithm Updates | | vtmoz
                                    0
                                  • vtmoz

                                    Ranking drop after sub domain to sub directory migration. Usual?

                                    Hi all, We had our help articles on sub-domain help.website.com. Then we moved it to sub directory website.com/help/. We expected ranking improvement of website.com as there is a wide saying of benefiting from sub domain to sub directory migration. We have noticed that ranking improvement of new sub directory pages (website.com/help/) but not for any main website pages (website.com). I presume that link juice from main website has benefited new sub directory pages but main website lost ranking due to the page rank dilution. Do you agree? Any ideas? Thanks

                                    Algorithm Updates | | vtmoz
                                    0
                                  • vtmoz

                                    Google ranking impact: Returning visitor vs New visitor

                                    Hi all, If a website's traffic increase in "New visitors"; will this impact rankings? Do the website overall traffic affect rankings? How much this is related with ranking improvement for main keywords? Just because thousands of visits increased for website, will it count as a strong ranking improvement signal? Thanks

                                    Algorithm Updates | | vtmoz
                                    0
                                  • EPPD

                                    The importance of meta keywords?

                                    Hello, Is adding meta keywords still worth doing nowadays? I have been reading and hearing some different opinions about it.  For a ' beginner ' in this field it is hard to find a definite answer to this questions.. Thank you for reading(and answering) my question!

                                    Algorithm Updates | | EPPD
                                    0
                                  • sanj5050

                                    How much link juice does a sites homepage pass to inner pages and influence inner page rankings?

                                    Hi, I have a question regarding the power of internal links and how much link juice they pass, and how they influence search engine ranking positions. If we take the example of an ecommerce store that sells kites. Scenario 1 It can be assumed that it is easier for the kite ecommerce store to earn links to its homepage from writing great content on its blog, as any blogger that will link to the content will likely use the site name, and homepage as anchor text. So if we follow this through, then it can be assumed that there will eventually be a large number of high quality backlinks pointing to the sites homepage from various high authority blogs that love the content being posted on the sites blog. The question is how much link juice does this homepage pass to the category pages, and from the category pages then to the product pages, and what influence does this have on rankings? I ask because I have seen strong ecommerce sites with very strong DA or domain PR but with no backlinks to the product page/category page that are being ranked in the top 10 of search results often, for the respective category and product pages. It therefore leads me to assume that internal links must have a strong determiner on search rankings... Could it therefore also be assumed that a site with a PR of 5 and no links to a specific product page, would rank higher than a site with a PR of 1 but with 100 links pointing to the specific product page? Assuming they were both trying to rank for the same product keyword, and all other factors were equal. Ie. neither of them built spammy links or over optimised anchor text? Scenario 2 Does internal linking work both ways? Whereas in my above example I spoke about the homepage carrying link juice downward to the inner category and product pages. Can a powerful inner page carry link juice upward to category pages and then the homepage. For example, say the blogger who liked the kite stores blog content piece linked directly to the blog content piece from his site and the kite store blog content piece was hosted on www.xxxxxxx.com/blog/blogcontentpiece As authority links are being built to this blog content piece page from other bloggers linking to it, will it then pass link juice up to the main blog category page, and then the kite sites main homepage? And if there is a link with relevant anchor text as part of the blog content piece will this cause the link juice flowing upwards to be stronger? I know the above is quite winded, but I couldn't find anywhere that explains the power of internal linking on SERP's... Look forward to your replies on this....

                                    Algorithm Updates | | sanj5050
                                    0
                                  • TheSEODR

                                    Low Domain Authority - Rank Well For Competitive Keywords

                                    I have been following a competitor's link profile on OSE for over 8 months. Their linkbacks have remained the same (3 follow, 9 nofollow links), all from low-quality directory sites. However, my competitor continues to improve in rankings  and is now #1 for competitive keyword searches. How is this possible? Is there a way to hide your link profile or links from OSE? Any tips are appreciated - Thanks!

                                    Algorithm Updates | | TheSEODR
                                    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
                                  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.