Here’s a recap:
- URLs in search: With Mobile-first indexing, we index the mobile version. When we recognize separate mobile URLs, we’ll show the mobile URL to mobile users, and the desktop URL to desktop users – the indexed content will be the mobile version in both cases.
- Crawled counts: The total number of crawled URLs/day generally won’t change, but the balance will shift from mostly-desktop to mostly-mobile crawls. During a switch-over to mobile-first indexing, we may temporarily crawl more as we reindex everything.
- Cached page: Unfortunately, it looks like we’re currently still not showing a cached page for many mobile-first indexed sites. This is a bug, not by design, and should get resolved over time. It’s just the UI, it doesn’t affect crawling, indexing, or ranking.
- Speed and mobile-first indexing: The mobile speed update in July is independent of mobile-first indexing. Fast sites are awesome for users, especially on mobile, since devices & connections there tend to be slower than with desktops.
- Mobile website UIs: Using “hamburger-menus” and “accordions” on mobile websites is fine.
- On requirements: Neither mobile-friendliness nor a mobile-responsive layout is requirements for mobile-first indexing. Pages without mobile versions still work on mobile and are usable for indexing. That said, it’s about time to move from desktop-only and embrace mobile 🙂
- On ranking: The mobile-first index doesn’t change anything for ranking other than that the mobile content is used. While mobile-friendliness is a ranking factor on mobile, being in the mobile-first index is not.
Google has also provided some handy links for more info!
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