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. Intermediate & Advanced SEO
    4. How does badly formatted HTML affect SEO?

    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.

    How does badly formatted HTML affect SEO?

    Intermediate & Advanced SEO
    4
    5
    1762
    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.
    • OptiBacUK
      OptiBacUK last edited by

      Our website uses a custom built CMS, but uses a fairly standard WYSIWYG text editor.

      I've looked at some of the code it produces, and it's not pretty. My gut feeling tells me that this extra bloat is bad for SEO.

      Am I right in thinking that Google doesn't look kindly upon badly formatted and bloated HTML?

      Thanks,
      James

      1 Reply Last reply Reply Quote 0
      • OptiBacUK
        OptiBacUK @CMC-SD last edited by

        Great, thanks for the info. I always thought Google was really hot on compliance, but good to know there is a bit of leeway.

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

          James, You might also want to look at the cached version of your page and then click on Text-only version and see if it shows up correctly. If it does, no need to worry from that perspective, but definitely worth checking from a usability, accessibility etc.

          1 Reply Last reply Reply Quote 1
          • CMC-SD
            CMC-SD last edited by

            The main concern is whether or not the spider can read the HTML. If something's broken, the spider may get confused. It's a good idea to check the site's W3C compliance and correct what you can, but I'm certain the search engines don't ding you if you're not perfectly compliant.

            The real problems with bad HTML are load times and cross-browser compatibility. (Although, frankly, great HTML can have cross-browser compatibility issues, since IE still refuses to get with the program.) Make sure the site looks good in all major browsers.

            OptiBacUK 1 Reply Last reply Reply Quote 2
            • Matt-Williamson
              Matt-Williamson last edited by

              As long as the code produced is readable in a web browser then it being bloated shouldn't have much of an impact in terms of SEO. The code bloats only downside is that it might slow the page load which will have impact on SEO. Remember crawlers like Google bot essentially look at the page content in terms of textual content, what labels (alt tags etc), images and links are on there not how neatly it is presented or whether it is valid markup or not. I would take a look at your page speed otherwise I would worry as long as it is able to fulfil all the basic on page requirements such as headers, page titles etc.

              Just to reiterate this - I have worked with CMS driven sites that aren't W3C compliant and don't produce the nicest html, but have loaded fast and ranked in the top 3 for competitive terms.

              1 Reply Last reply Reply Quote 1
              • 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

              • gamstopbet

                Will critical error in wordpress for memory limit affect seo rankings?

                will critical error in wordpress to increase memory limit affect seo rankings?

                Intermediate & Advanced SEO | | gamstopbet
                0
              • Cin7_Marketing

                Does changing template for a wordpress site affect SEO

                Hi I work for an Inventory Management Software company and we already have a WordPress site but I am currently working on re-designing of our WordPress site and in this process, we are looking for moving to a new template. I want to know what will be the impact on SEO performance while taking a shift to a new template.

                Intermediate & Advanced SEO | | Cin7_Marketing
                0
              • andy.bigbangthemes

                Are "Powered By..." type footer backlinks good or bad for SEO?

                Hi guys, We're running a software company which is also selling WP themes amongst other things. We've heard recently that footer backlinks like "Powered by BigBangThemes" might do more harm than good. Some clients usually forget to change them - so we want to make sure we stop including them in case this is true. Thanks!

                Intermediate & Advanced SEO | | andy.bigbangthemes
                0
              • jnew929

                Is it bad for SEO to have a page that is not linked to anywhere on your site?

                Hi, We had a content manager request to delete a page from our site. Looking at the traffic to the page, I noticed there were a lot of inbound links from credible sites. Rather than deleting the page, we simply removed it from the navigation, so that a user could still access the page by clicking on a link to it from an external site. Questions: Is it bad for SEO to have a page that is not directly accessible from your site? If no: do we keep this page in our Sitemap, or remove it? If yes: what is a better strategy to ensure the inbound links aren't considered "broken links" and also to minimize any negative impact to our SEO? Should we delete the page and 301 redirect users to the parent page for the page we had previously hidden?

                Intermediate & Advanced SEO | | jnew929
                0
              • joony

                Advanced SEO - What would you do after you run out of keywords?

                Hello! Our company has been growing in terms of traffic and ranking well for a couple of years but we are now kind of stagnating because we just don't know what to do next. We have a good blog - and with our blogs, we have been targeting all major keywords with their related keywords as a bucket. - "keyword theme / page" for a long time. But it seems we now don't have any major keyword theme to write about. What is worse is that we don't see any traffic growth since 2014 September. (although we added many good blogs) So what would do you when you run out of keywords? or keyword themes? Would you just keep pumping in more blogs and hope that you get more clicks? or at some point, you just don't care about keywords and write whatever relevant to your site? Wouldn't it hurt our site if we create similar keyword themed pages? (like regurgitating our keywords?)  or even same keyword targeting pages? You must have similar experience if you are an owner of a niche site. Can you please share your experience with this kind of headaches? Thank you and look forward to your comments.

                Intermediate & Advanced SEO | | joony
                3
              • McTaggart

                Are these URL hashtags an SEO issue?

                Hi guys - I'm looking at a website which uses hashtags to reveal the relevant content So there's page intro text which stays the same... then you can click a button and the text below that changes So this is www.blablabla.com/packages is the main page - and www.blablabla.com/packages#firstpackage reveals first package text on this page - www.blablabla.com/packages#secondpackage reveals second package text on this same page - and so on. What's the best way to deal with this? My understanding is the URLs after # will not be indexed very easily/atall by Google - what is best practice in this situation?

                Intermediate & Advanced SEO | | McTaggart
                0
              • Peter264

                Does font size affect SEO?

                In the eyes of Google, would the font text size of say a news article affect SEO?  For example, a slightly larger font being easier to read by those with bad eyes?  Accessibility?  If so, what size would be ideal? 10, 12, 14? Your thoughts and suggestions are greatly appreciated.

                Intermediate & Advanced SEO | | Peter264
                0
              • SteveOllington

                Does Blocking ICMP Requests Affect SEO?

                All in the title really. One of our clients came up with errors with a server header check, so I pinged them and it times out. The hosting company have told them that it's because they're blocking ICMP requests and this doesn't affect SEO at all... but I know that sometimes pinging posts, etc... can be beneficial so is this correct? Thanks, Steve.

                Intermediate & Advanced SEO | | SteveOllington
                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.