• BBgmoro

        See all notifications

        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.

          Turn SEO data into actionable content briefs

          Turn SEO data into actionable content briefs

          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
        • 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. 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
        3370
        Loading More Posts
        • Watching

          Notify me of new replies.
          Show question in unread.

        • Not Watching

          Do not notify me of new replies.
          Show question in unread if category is not ignored.

        • Ignoring

          Do not notify me of new replies.
          Do not show question in unread.

        • Oldest to Newest
        • Newest to Oldest
        • Most Votes
        Reply
        • Reply as question
        Locked
        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

                  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
                    1
                  • WayneM.

                    Meta name Author

                    wordpress technical seo meta data

                    Hello! I have a problem. I'm using Rank Math for WordPress. But I can’t configure a basic thing such as <meta name="author" content="" />. I had to insert this code manually using the hook. Does anyone know a normal way to do this markup? Example page: https://b-shoes.com/foot-shaped-shoes/ Thank you!

                    Technical SEO | | WayneM.
                    0
                  • tif-swedensky

                    Unsolved Google Search Console Still Reporting Errors After Fixes

                    google search console sitemaps 400 errors

                    Hello, I'm working on a website that was too bloated with content. We deleted many pages and set up redirects to newer pages. We also resolved an unreasonable amount of 400 errors on the site. I also removed several ancient sitemaps that listed content deleted years ago that Google was crawling. According to Moz and Screaming Frog, these errors have been resolved. We've submitted the fixes for validation in GSC, but the validation repeatedly fails. What could be going on here? How can we resolve these error in GSC.

                    Technical SEO | | tif-swedensky
                    0
                  • caitlinrolex789

                    Unsolved Google URL inspection live test rendering issue.

                    google search console wordpress css

                    Hi Everyone, This is my first post on Moz. I have been trying to get this thing sorted and have read everywhere and everyone just says don't worry about it. I would really like some advice/suggestions on this it will be really helpful. When I use the Google URL inspection tool from the Google search console the page rendering is completely broken. The tool refuses to load resources each time. At end of the day that's how the website is rendered in Google cache. I have already tried disabling cache plugins and Cloudflare but nothing works. site - nationalcarparts.co.nz
                    This is how it renders when using URL inspection tool -
                    https://prnt.sc/7XKHtEU01gEl and if you check cache:https://nationalcarparts.co.nz this is how Google is caching it. Plugins I am using - Elementor Version 3.6.1, Elementor Pro Version 3.6.4, Exclusive Addons Elementor Version 2.5.4, Exclusive Addons Elementor Pro Version 1.4.6, WP- rocket, Cloudflare Pro plan with the plugin. Please if someone has fixed this issue and has a possible solution for it. Thanks cacheissue1.PNG

                    Support | | caitlinrolex789
                    1
                  • pok3rplay3r

                    Crawl rate dropped to zero

                    Hello, I recently moved my site in godaddy from cpanel to managed wordpress. I bought this transfer directly from GoDaddy customer service. in this process they accidentally changed my domain from www to non www. I changed it back after the migration, but as a result of this sites craw rate from search console fell to zero and has not risen at all since then. In addition to this website does not display any other errors, i can ask google manually fetch my pages and it works as before, only the crawl rates seems to be dropped permanently. GoDaddy customer service also claims that do not see any errors but I think, however, that in some way they caused this during the migration when the url changed since the timing match perfectly.  also when they accidentally removed the www, crawl rate of my sites  non www version got up but fell back to zero when I changed it back to www version. Now the crawl rate of both www and non www version is zero. How do I get it to rise again? Customer service also said that the problem may be related to ftp-data of search console?  But they were not able to help any more than .Would someone from here be able to help me with this in anyway please?

                    Technical SEO | | pok3rplay3r
                    0
                  • Gavin.Atkinson

                    Why has my search traffic suddenly tanked?

                    On 6 June, Google search traffic to my Wordpress travel blog http://www.travelnasia.com tanked completely. There are no warnings or indicators in Webmaster Tools that suggest why this happened. Traffic from search has remained at zero since 6 June and shows no sign of recovering. Two things happened on or around 6 June. (1) I dropped my premium theme which was proving to be not mobile friendly and replaced it with the ColorMag theme which is responsive. (2) I relocated off my previous hosting service which was showing long server lag times to a faster host. Both of these should have improved my search performance, not tanked it. There were some problems with the relocation to the new web host which resulted in a lot of "out of memory" errors on the website for 3-4 days. The allowed memory was simply not enough for the complexity of the site and the volume of traffic. After a few days of trying to resolve these problems, I moved the site to another web host which allows more PHP memory and the site now appears reliably accessible for both desktop and mobile. But my search traffic has not recovered. I am wondering if in all of this I've done something that Google considers to be a cardinal sin and I can't see it. The clues I'm seeing include: Moz Pro was unable to crawl my site last Friday. It seems like every URL it tried to crawl was of the form http://www.travelnasia.com/wp-login.php?action=jetpack-sso&redirect_to=http://www.travelnasia.com/blog/bangkok-skytrain-bts-mrt-lines which resulted in a 500 status error. I don't know why this happened but I have disabled the Jetpack login function completely, just in case it's the problem. GWT tells me that some of my resource files are not accessible by GoogleBot due to my robots.txt file denying access to /wp-content/plugins/. I have removed this restriction after reading the latest advice from Yoast but I still can't get GWT to fetch and render my posts without some resource errors. On 6 June I see in Structured Data of GWT that "items" went from 319 to 1478 and "items with errors" went from 5 to 214. There seems to be a problem with both hatom and hcard microformats but when I look at the source code they seem to be OK. What I can see in GWT is that each hcard has a node called "n [n]" which is empty and Google is generating a warning about this. I see that this is because the author vcard URL class now says "url fn n" but I don't see why it says this or how to fix it. I also don't see that this would cause my search traffic to tank completely. I wonder if anyone can see something I'm missing on the site. Why would Google completely deny search traffic to my site all of a sudden without notifying any kind of penalty? Note that I have NOT changed the content of the site in any significant way. And even if I did, it's unlikely to result in a complete denial of traffic without some kind of warning.

                    Technical SEO | | Gavin.Atkinson
                    1
                  • artdivision

                    How can I block incoming links from a bad web site ?

                    Hello all, We got a new client recently who had a warning from Google Webmasters tools for manual soft penalty. I did a lot of search and I found out one particular site that sounds roughly 100k links to one page and has been potentialy a high risk site. I wish to block those links from coming in to my site but their webmaster is nowhere to be seen and I do not want to use the disavow tool. Is there a way I can use code to our htaccess file or any other method? Would appreciate anyone's immediate response. Kind Regards

                    Technical SEO | | artdivision
                    0
                  • AndrewAkesson

                    Web config redirects not working where a trailing slash is involved

                    I'm having real trouble with getting working redirects in place to use on a site we're re-launching with a modified url structure. Old URL: http://www.example.com/example_folder/ New URL: http://www.example.com/example-of-new-folder/ Now, where the old URL's have a trailing slash the web.config simply will not accept it. It says the URL can start with a slash, but not end with a slash. However, many of my URL's do end with a slash so I need a workaround. These are the rules I'm putting in place: <location path="example_folder/"></location> Thanks

                    Technical SEO | | AndrewAkesson
                    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 - 2026 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.