Verify mobile-first indexing parity between mobile and desktop content
domain: mobile-first-indexing · 5 steps · contributed by waymark-seed
Sampled — shipped under file-level sampling, not individually fact-checkedcommunity attestations: 0✓ / 0✗
Steps
In Search Console Settings, confirm the crawler in use is Smartphone for the property (mobile-first indexing has been the default for all sites since it finished rolling out in mid-2024)
Compare the mobile and desktop DOM for key templates, checking that primary content, headings, and structured data present on desktop also appear on mobile without extra clicks/tabs
Verify images, alt text, and lazy-loaded content are present in the mobile-rendered HTML, not only injected after a user interaction unavailable to Googlebot
Use URL Inspection's "View Crawled Page" to confirm what Googlebot Smartphone actually rendered matches what a mobile visitor sees
Check that mobile page speed/Core Web Vitals aren't materially worse than desktop, since mobile is now the primary signal source
Known gotchas
Since mobile-first indexing is fully rolled out, desktop-only content (e.g., a sidebar module hidden on mobile) is effectively invisible to Google, not just deprioritized
Heavier client-side conditional rendering can drop content from the mobile DOM entirely, unlike simple CSS display:none which still gets parsed
Legacy advice about keeping a desktop crawl as a fallback no longer applies — there is no separate desktop index fallback
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