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
    • Attend MozCon
    • 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 your brand’s footprint in AI search
      Moz Pro

      Track your brand’s footprint in AI search

      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.

      Let your business shine with Listings AI

      Let your business shine with Listings AI

      Get found
    • 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
    • Attend MozCon
    • 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
    • My Q&A
    • Users
    • Ask the Community

    Welcome to the Q&A Forum

    Browse the forum for helpful insights and fresh discussions about all things SEO.

    1. SEO and Digital Marketing Q&A Forum
    2. Categories
    3. On-Page / Site Optimization
    4. Wc3 validation is it still that important

    Wc3 validation is it still that important

    On-Page / Site Optimization
    8 6 1.0k
    • Oldest to Newest
    • Newest to Oldest
    • Most Votes
    Reply
    • Reply as question
    Log in to reply
    This topic has been deleted. Only users with topic management privileges can see it.
    • onlinemediadirect
      onlinemediadirect last edited by

      When looking to improve a sites ranking . I am working on a site that has script errors and needs fixing have you had any experience ?

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

        is it still that important

        I don't think it was ever important.  Lots of sites still fail to validate and perform well on the web.  Lots of pages on search engine sites don't validate.

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

          If the scripting errors cause crawler and indexation problems, than they're problematic, but script errors like a lot of things have shades of gray.  Some are really bad, some not as bad, and some benign.

          WC3 validation is nice though as it's helping to insure the quality of the network in general.

          onlinemediadirect RogersSEO 2 Replies Last reply Reply Quote 3
          • onlinemediadirect
            onlinemediadirect @RyanPurkey last edited by

            what about the script errors here - http://www.radiatorcentre.com

            anything to worry about.

            RyanPurkey 1 Reply Last reply Reply Quote 0
            • AlanBleiweiss
              AlanBleiweiss last edited by

              Ryan's on track.

              Picture it this way - sure, millions of sites fail validation and yet still show up in search results.  Except if there are enough errors, it could either prevent searchbots from successfully discovering all your content, or alternately, prevent search algorithms from properly evaluating content and topical relationships.

              A newer concern is if there are too many errors that cause bots to slow down their crawl capacity, that will definitely impact a site's rankings if competitor sites have no such slowdowns.

              1 Reply Last reply Reply Quote 0
              • RyanPurkey
                RyanPurkey @onlinemediadirect last edited by

                They weren't critical as the page was able to load when scripting was turned completely off, but in the WC3 validator there were only a dozen errors so it shouldn't be too hard to fix them.

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

                  There was a 'ask Matt'  google webmaster video on YouTube not too long ago where he talked about errors in markup - if I remember right he said it wasn't too important - but of course Ryan's comment is sound - so long as the errors don't break the site for users/crawlers.

                  1 Reply Last reply Reply Quote 1
                  • RogersSEO
                    RogersSEO @RyanPurkey last edited by

                    are html errors more critical than css?  for me css are more common

                    1 Reply Last reply Reply Quote 0
                    • 1 / 1
                    • First post
                      Last post
                    • I have updated title 4 days ago but still still showing old title and description on Google serps, How to resolve it?
                      Saman_Godini
                      Saman_Godini
                      0
                      3
                      57

                    • More important SEO
                      NickW816
                      NickW816
                      0
                      3
                      84

                    • CSS validation
                      diywm
                      diywm
                      0
                      2
                      294

                    • Studies about the importance of headlines?
                      Andropenis_Australia
                      Andropenis_Australia
                      0
                      2
                      296

                    • Tags in wordpress -Important?
                      PedroM
                      PedroM
                      0
                      4
                      773

                    • Importance of URL Structure
                      DougRoberts
                      DougRoberts
                      0
                      2
                      441

                    • What is important for page rank?
                      Dr-Pete
                      Dr-Pete
                      0
                      6
                      620

                    • Importance of Keyword density?
                      jcolman
                      jcolman
                      0
                      10
                      5.3k

                    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

                    Moz logo
                    © 2021 - 2026 SEOMoz, Inc., a Ziff Davis company. All rights reserved. Moz is a registered trademark of SEOMoz, Inc.
                    • Accessibility
                    • Terms of Use
                    • Privacy