Mobile SEO.
Learn what Mobile SEO means in modern search and SEO.
Optimising a website's performance, usability, and content for mobile devices — foundational since Google's mobile-first indexing made the mobile version the primary crawled version.
Mobile SEO is the practice of optimising websites so they perform well and provide a good user experience on smartphones and tablets. Since Google switched to mobile-first indexing — using the mobile version of a page as the primary basis for indexing and ranking — mobile optimisation has become a prerequisite rather than an optional enhancement. Sites that perform significantly worse on mobile than desktop are ranked on the basis of their weaker mobile experience.
Core Mobile SEO Requirements
Responsive design (the same HTML served to all devices, styled by CSS media queries) is the Google-recommended approach. Text must be readable without zooming. Tap targets (buttons and links) must be sized and spaced for finger navigation. Content must be identical between mobile and desktop — hiding content behind tabs or accordions on mobile that's visible on desktop can reduce its ranking weight. Mobile page speed is paramount: mobile networks are slower, and mobile LCP thresholds are harder to achieve.
Mobile-Specific SEO Considerations
Avoid interstitials that cover the main content on mobile (pop-ups immediately on page load), which Google penalises. Ensure phone numbers are click-to-call formatted. Test with Google's Mobile Usability report in Search Console, which flags specific issues like viewport not configured, content wider than screen, and clickable elements too close together. Chrome DevTools' device emulation and real device testing with WebPageTest reveal performance gaps between desktop and mobile.
Articles about Mobile SEO
Read more on the Aergos blog.
Your Client Sent You an AI SEO Audit. Here's How to Respond.
Clients are showing up with AI-generated SEO audits from ChatGPT, Claude, and Perplexity and expecting action. Here's how to evaluate what's real, handle the conversation without being condescending, and use the moment to build trust instead of losing it.
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The 2026 Guide to Ranking in Both SEO and AI Search
Search has split into three disciplines — SEO for rankings, AEO for answer boxes, and GEO for getting cited by AI engines like ChatGPT, Perplexity, and Gemini. This is the 2026 master guide to winning all three without running three separate playbooks. If you bookmark one resource this year, make it this one.
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Why Most Small Business SEO Fails in the First 90 Days
Most small business SEO campaigns don't fail because of bad luck. They fail because of predictable mistakes made in the first 90 days. Here's what goes wrong and how to get it right from day one.
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The Most Common SEO Mistakes We See on New Client Sites
After running dozens of site audits, the same problems keep showing up. Missing title tags, duplicate content, zero internal linking — these common SEO mistakes are costing sites real rankings. Here's what we see most, and how to fix it.
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How to Do a Technical SEO Audit in 2025: A Step-by-Step Checklist
A technical SEO audit tells you whether search engines can actually find and understand your site — before content or backlinks even matter. This step-by-step checklist walks you through crawlability, indexation, page speed, mobile usability, structured data, and internal linking. Start here.
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AI Overviews SEO: How to Optimize Your Content to Get Cited by Google AI
Google's AI Overviews are reshaping how people find answers — and most of your competitors haven't figured out the format yet. Here's what Google actually cites, what kills your chances, and how to close the gap fast.
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