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
-

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.
-
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.

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.
-
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.


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.
-
@rwat Hi, did you find a solution?
-
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.
Got a burning SEO question?
Subscribe to Moz Pro to gain full access to Q&A, answer questions, and ask your own.
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.
Related Questions
-
Best redirect destination for 18k highly-linked pages
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 | | davidvogel1 -
Unsolved IP Address Indexed on Google along with Domain
My website is showing/indexed on Google search results twice, with IP address and domain name
Other SEO Tools | | mupetra
I'm using AWS LightSail
I don't know how to fix this, beside I'm afraid this duplicate can harm my website0 -
Unsolved Capturing Source Dynamically for 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 | | peteboyd0 -
Why can't google mobile friendly test access my website?
getting the following error when trying to use google mobile friendly tool: "page cannot be reached. This could be because the page is unavailable or blocked by robots.txt" I don't have anything blocked by robots.txt or robots tag. i also manage to render my pages on google search console's fetch and render....so what can be the reason that the tool can't access my website? Also...the mobile usability report on the search console works but reports very little, and the google speed test also doesnt work... Any ideas to what is the reason and how to fix this? LEARN MOREDetailsUser agentGooglebot smartphone
Technical SEO | | Nadav_W0 -
Too Many On-Page Links - caused by a drop down menu
Many of our e-com sites we build for customers have drop down menus to help the user easily find products without having to click - Example: http://www.customandcommercial.com/ But this then causes the report to trigger too many on page links We do have a site map and a google site map So should I put code in place not to follow the drop down menu link items or leave in place?
Technical SEO | | spiralsites0 -
Mobile SERPS: how to optimize for call button
Hi, I have 2 questions about the "call" button on mobile google serps when doing a business name search: -since when is this button available in SERPS -is there anything specific you can do to actually have google display that call button (schema.org, ...) Kind regards Pieter
Technical SEO | | TruvoDirectories0 -
Google rankings dropped dramatically after 24 hrs of hosting suspension
Hi, One of my websites ( http://www.traveldestinationsearch.com/ ) dropped most of its Google rankings after 24 hours of hosting suspension (from April 26 until April 27, 2012). The hosting company suspended my website after exceeding the bandwidth limit: there was no unusual activity on my website, it just exceeded its bandwidth limit by 20-30MB for the previous month. Anyway, the website is back online since April 27 but the problem is that, following these 24 hrs of no service, I see a dramatic decrease of my website's Google rankings for its main keywords. Even today, April 29, I can't find my website anywhere in the first 100 results for most of its targeted keywords. Before the suspension, the website ranked #1 for its main keyword and somewhere in the first 2-3 pages of Google search results for other two main keywords. My question is: is it the hosting suspension the reason for the Google ranking drop, and (assuming this is a temporary problem) when do you think I should expect my website to regain the rankings it had before the hosting suspension? Thanks for your support. Regards, Adrian
Technical SEO | | AdrianBanu0 -
How to Resolve Rankings Drop from a DDOS Attack?
Our rankings just plummeted on Tuesday across the board. There was a DDOS attack on Tuesday and since then the rankings went down and have stayed down, even though the DDOS attack has been resolved. Also, this is the 3rd or 4th attack they've encountered this year. How long could this last? How can we deal with this? Thanks
Technical SEO | | poolguy0