AEO ENGINE FREE TOOL
Free Mobile-Friendly Test: Check Mobile Readiness for AI Search
Who this tool is for: Built for SEO leads, site engineers, founders, and agencies who need a fast mobile-readiness check with actionable remediation. Use it before content launches, during mobile SEO audits, or before running a full AEO report to ensure pages work for both mobile users and AI search crawlers.
What this tool measures
- Viewport configuration, whether the page declares a proper viewport meta tag for mobile rendering
- Content width, whether content fits within mobile viewport without horizontal scrolling
- Tap-target sizing, whether buttons and links are large enough for touch navigation (minimum 48px)
- Font legibility, whether body text is at least 16px and readable on mobile devices
- AI crawler readiness, whether GPTBot, ClaudeBot, PerplexityBot, and Google-Extended can access mobile-rendered content
- Mobile SEO signals, responsive layout, no flash, no intrusive interstitials, mobile-friendly redirects
- Competitor comparison with PageSpeed Insights, Bing Mobile Friendliness Test, SEOptimer, Sitechecker, and SEO Site Checkup
How it works
- Enter your page URL
- The tool fetches and analyzes the page's mobile HTML, viewport, tap targets, font sizing, and content layout
- Review mobile readiness score with pass/warn/fail status for each dimension
- Check the AI crawler accessibility score and mobile optimization signals
- Run the full AEO report or book a strategy call to implement fixes
Why it matters for AI search and revenue
Mobile-friendliness has been a Google ranking signal since 2015, and in 2026 it also affects whether AI answer engines can crawl, parse, and cite your content on mobile devices. Google retired its standalone Mobile-Friendly Test tool in 2023, but mobile usability remains critical, AI Overview citations favor pages that provide a good mobile experience. If your page has mobile usability issues, it is less likely to be cited in AI-generated answers.
How AEO Engine executes beyond the tool
AEO Engine turns the mobile-readiness diagnosis into implementation: fix viewport meta tags, improve tap-target sizing, eliminate horizontal scrolling, optimize font sizing, add AI crawler directives for mobile rendering, and ensure structured data is parseable on mobile. The free tool diagnoses; managed AEO execution ships the fixes.
Use cases and examples
- Check mobile readiness before launching a new marketing page
- Identify whether viewport issues are blocking AI crawler access on mobile
- Audit mobile usability across competitor pages before rewriting content
- Verify that tap targets and font sizes meet Google mobile-friendly criteria
- Bridge a quick mobile check into a full AEO report with AI visibility scoring
Comparison and alternatives
Google retired its Mobile-Friendly Test in 2023. Bing Mobile Friendliness Test, SEOptimer, Sitechecker, and SEO Site Checkup offer partial checks. This free tool adds an AI crawler readiness dimension that traditional mobile-friendly tools do not offer. Use Bing for a second opinion; use AEO Engine to bridge mobile fixes into AI search visibility.
FAQ
What is a mobile-friendly test?
A mobile-friendly test checks whether a page provides a usable experience on mobile devices. It evaluates viewport configuration, content width, tap-target sizing, font legibility, and mobile SEO signals to determine if the page meets mobile usability standards.
Why did Google retire its Mobile-Friendly Test tool?
Google retired its standalone Mobile-Friendly Test tool in late 2023, directing users to PageSpeed Insights and Search Console's Mobile Usability report instead. However, those tools focus on performance data and don't provide a single-page quick check, leaving room for independent mobile-friendly checkers.
What makes a page mobile-friendly?
A mobile-friendly page has a proper viewport meta tag, content that fits within the mobile viewport without horizontal scrolling, tap targets at least 48px in size, body text at least 16px, no intrusive interstitials, responsive or adaptive layout, and no Flash or incompatible plugins.
How does mobile-friendliness affect AI search citations?
Google's AI Overview selects citation sources that provide a good mobile experience. If your page has mobile usability issues, it is less likely to be cited in AI-generated answers, even if your content is authoritative and relevant. AI crawlers also need to parse mobile-rendered content efficiently.
Is this mobile-friendly test free?
Yes. The mobile-friendly test is free to run. Enter your URL, see the results, and use the recommendations yourself, or let AEO Engine execute the fixes as part of a managed AEO engagement.
Does passing the mobile-friendly test guarantee rankings?
No. Mobile-friendliness is one of many Google ranking signals. Passing the test means your page meets baseline mobile usability criteria, but it does not guarantee top rankings. Combine mobile readiness with strong content, schema, and authority signals for best results.
Next step
Test whether your page is mobile-friendly. Check viewport setup, tap-target sizing, content width, font legibility, and AI-search citation readiness. Free mobile-friendly checker from AEO Engine.