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. Sudden Drop in Mobile Core Web Vitals

    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.

    Sudden Drop in Mobile Core Web Vitals

    Technical SEO
    core web vitals google search console technical seo
    4
    5
    3271
    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.
    • rwat
      rwat Subscriber last edited by

      Web Vitals Screengrab.PNG

      For some reason, after all URLs being previously classified as Good, our Mobile Web Vitals report suddenly shifted to the above, and it doesn't correspond with any site changes on our end.

      Has anyone else experience something similar or have any idea what might have caused such a shift?

      Curiously I'm not seeing a drop in session duration, conversion rate etc. for mobile traffic despite the seemingly sudden change.

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

        I can’t understand their algorithm for core web vitals. I have made some technical updates to our website for speed optimization, but the thing that happened in the search console is very confusing for my site.

        166f3e54-485f-44f4-81a5-4e05cd49dc04-image.png

        For desktops, pages are indexed as good URLs
        while mobile-indexed URLs are displayed as poor URLs.
        Our website is the collective material for people looking for Canada immigration (PAIC), and 70% of the portion is filled with text only. We are using webp images for optimization, still it is not passing Core Web Vitals.

        I am looking forward to the expert’s suggestion to overcome this problem.

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

          I can’t understand their algorithm for core web vitals. I have made some technical updates to our website for speed optimization, but the thing that happened in the search console is very confusing for my site.

          3b9f9b48-74d8-4ed4-bf02-c1fefafa21e7-image.png

          2e3277d8-e620-4e4d-acbf-bcd233a16cf4-image.png

          For desktops, pages are indexed as good URLs
          while mobile-indexed URLs are displayed as poor URLs.
          Our website is the collective material for people looking for Canadian immigration (PAIC), and 70% of the portion is filled with text only. We are using webp images for optimization, still it is not passing Core Web Vitals.

          I am looking forward to the expert’s suggestion to overcome this problem.

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

            @rwat Hi, did you find a solution?

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

              Yes, I am also experiencing the same for one of my websites, but most of them are blog posts and I am using a lot of images without proper optimization, so that could be the reason. but not sure.

              It is also quite possible that Google maybe adding some more parameters to their main web critical score.

              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

              • davidvogel

                Best redirect destination for 18k highly-linked pages

                redirect redirect chain technical seo 301 redirects

                Technical SEO question regarding redirects; I appreciate any insights on best way to handle. Situation: We're decommissioning several major content sections on a website, comprising ~18k webpages. This is a well established site (10+ years) and many of the pages within these sections have high-quality inbound links from .orgs and .edus. Challenge: We're trying to determine the best place to redirect these 18k pages. For user experience, we believe best option is the homepage, which has a statement about the changes to the site and links to the most important remaining sections of the site. It's also the most important page on site, so the bolster of 301 redirected links doesn't seem bad. However, someone on our team is concerned that that many new redirected pages and links going to our homepage will trigger a negative SEO flag for the homepage, and recommends instead that they all go to our custom 404 page (which also includes links to important remaining sections). What's the right approach here to preserve remaining SEO value of these soon-to-be-redirected pages without triggering Google penalties?

                Technical SEO | | davidvogel
                0
              • mitty27

                Unsolved Why My site pages getting video index viewport issue?

                technical seo

                Hello, I have been publishing a good number of blogs on my site Flooring Flow. Though, there's been an error of the video viewport on some of my articles. I have tried fixing it but the error is still showing in Google Search Console. Can anyone help me fix it out?

                Technical SEO | | mitty27
                0
              • peteboyd

                Unsolved Capturing Source Dynamically for UTM Parameters

                technical seo google analytics utm parameters

                Does anyone have a tutorial on how to dynamically capture the referring source to be populated in UTM parameters for Google Analytics? We want to syndicate content and be able to see all of the websites that provided referral traffic for this specific objective. We want to set a specific utm_medium and utm_campaign but have the utm_source be dynamic and capture the referring website. If we set a permanent utm_source, it would appear the same for all incoming traffic. Thanks in advance!

                Technical SEO | | peteboyd
                0
              • MarketAPeel

                Backlinks on Moz not on Google Search Console

                google search console backlinks

                Moz is showing thousands of backlinks to my site that are not showing up on Google Search Console - which is good because those links were created by some spammer in Pakistan somewhere. I haven't yet submitted a disavow report to Google of well over 10K links because the list keeps growing every day with new backlinks that have been rerouted to a 404 page. I have asked Google to clarify and they put my question on their forum for an answer, which I'm still waiting for - so I thought I'd try my luck here. My question... If Moz does not match Google Search Console, and backlinks are important to results, how valid is the ranking that Moz creates to let me know how I'm doing in this competition and if I'm improving or not. If the goal is to get Google to pay attention and I use Moz to help me figure out how to do this, how can I do that if the backlink information isn't the same - by literally over 10 000 backlinks created by some spammer doing odd things... They've included the url from their deleted profile on my site with 100s of other urls, including Moz.com and are posting them everywhere with their preferred anchor text. Moz ranking considers the thousands of spam backlinks I can't get rid of and Google ignores them or disavows them. So isn't the rankings, data, and graphs apples and bananas? How can I know what my site's strength really is and if I'm improving or not if the data doesn't match? Complete SEO Novice Shannon Peel
                Brand Storyteller
                MarketAPeel

                Link Building | | MarketAPeel
                0
              • gdavey

                Do web design footer links of websites you build have value?

                Hi everyone. I am trying to build up DA for my site and create linking opportunities with my clients sites but I am not seeing any link value. I just did a redesign with another firm and we built out www.denbow.com . We have links to our sites in the footer but for some reason it's not being indexed. Can someone help me understand if it is good to put built by a href link in the footer? I've built almost 12 sites in my first 1.5 years of being in business for myself and I thought the links would pass some sort of value. Thanks in advance for the help and education. Regards, Noob Gary

                Technical SEO | | gdavey
                0
              • RoxBrock

                Is it good practice to still pay for Best of the Web Directory (BOTW) and other similar one's you have to pay for?

                I know that paid for links are hit by Google, but in the past these directories were okay. What about now? Thank you.

                Technical SEO | | RoxBrock
                0
              • zenstorageunits

                Sitemap indexed pages dropping

                About a month ago I noticed my pages indexed from my sitemap are dropping.There are 134 pages in my sitemap and only 11 are indexed. It used to be 117 pages and just died off quickly. I still seem to be getting consistant search traffic but I'm just not sure whats causing this. There are no warnings or manual actions required in GWT that I can find.

                Technical SEO | | zenstorageunits
                0
              • KnutDSvendsen

                Is there a great tool for URL mapping old to new web site?

                We are implementing new design and removing some pages and adding new content. Task is to correctly map and redirect old pages that no longer exist.

                Technical SEO | | KnutDSvendsen
                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.