Google revised mobile-first indexing deadline is coming near in the next few weeks. Google stated that it will be going 100% into mobile-first indexing. The company shifted the deadline from September 2020 to March 2021. Google’s John Mueller states today that March 2021 is an approximate deadline.
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Here Are The Tweets
That's approximately the target. We don't have a critical reason to reach any particular cut-off date, so it could be that the remaining sites are a bit spread out, some earlier, some a little bit later.
— ? John ? (@JohnMu) February 23, 2021
So this might mean some may be moved over 100% prior to April 1, 2021, and some may running behind and move over after April 1, 2021. If the site is moved to the mobile-indexing and it has the issues mentioned below then the site rankings in Google most likely will change. Here’s a list from Google that you should check between your desktop version and mobile version of your site:
- Robots meta tags on the mobile version
- Lazy-loading on the mobile version
- Be aware of what you block
- Make sure primary content is the same on desktop and mobile
- Check your images and videos including
- Image quality
- Alt attributes for images
- Different image URLs between desktop and mobile version
- Video markup
- Video and image placement
So be ready, which I believe most of you are and most of your sites are already moved over to mobile-first indexing. But if not, then be ready.