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
-
How to fix core web vital issue on shopify website , any recommned app from shopfiy store?
I'm facing challenges optimizing Core Web Vitals on my Shopify store. Does anyone have experience with Shopify apps that effectively address LCP, FID, and CLS issues? Any specific recommendations would be greatly appreciated.
Technical SEO | | faizalialiali0 -
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 -
Why Product pages are throwing Missing field "image" and Missing field "price" in Wordpress Woocommerce
I have a wordpress wocommerce website where I have uploaded 100s of products but it's giving me error in GSC under merchant listing tab. When I tested it show missing field image and missing field price. I have done everything according to https://developers.google.com/search/docs/appearance/structured-data/product#merchant-listing-experiences and applied fixed i.e. images are 800x800 and price range is also there. What else can be done here?!merchant listing.jpg
Technical SEO | | Ravi_Rana0 -
Google Not Indexing Pages (Wordpress)
Hello, recently I started noticing that google is not indexing our new pages or our new blog posts. We are simply getting a "Discovered - Currently Not Indexed" message on all new pages. When I click "Request Indexing" is takes a few days, but eventually it does get indexed and is on Google. This is very strange, as our website has been around since the late 90's and the quality of the new content is neither duplicate nor "low quality". We started noticing this happening around February. We also do not have many pages - maybe 500 maximum? I have looked at all the obvious answers (allowing for indexing, etc.), but just can't seem to pinpoint a reason why. Has anyone had this happen recently? It is getting very annoying having to manually go in and request indexing for every page and makes me think there may be some underlying issues with the website that should be fixed.
Technical SEO | | Hasanovic1 -
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 | | artdivision0 -
Mobile URL parameter (Redirection to desktop)
Hello, We have a parallel mobile website and recently we implemented a link pointing to the desktop website. This redirect is happening via a javascript code and results in a url followed by this paramenter: ?m=off Example:
Technical SEO | | echo1
http://www.m.website.com redirects to:
http://www.website.com/?m=off Questions: Will the "http://www.website.com/?m=off" be considered duplicate content with "http://www.website.com" since they both return the same content? Is there any possibility that Google will take into consideration the url ending in "/?m=off"? How should we treat this new url? The webmaster tools URL parameter configuration at the moment isn't experiencing problems but should we submit the parameter anyway in order not to be indexed or should we wait first and see the error response? In case we should submit this for removal... what's the best way to do it? Like this? Parameter: ?m=off Does this parameter change page content seen by the user? - doesn't affect page content Any help is much appreciated.
Thank you!0 -
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 | | KnutDSvendsen0