Mobile SEO checklist for small business websites

Key takeaways

A mobile SEO checklist covers the things that decide whether Google can read your mobile pages and whether searchers on phones choose and use them. Most are not technical. They take an afternoon to check on a real phone, and the ones that fail are usually cheap to fix.

• Parity first: mobile pages need the same content, links and structured data as desktop.
• Core Web Vitals on mobile: LCP within 2.5 seconds, INP within 200 milliseconds, CLS under 0.1.
• No pop-ups covering the content when a visitor arrives from search.
• Local signals matter more on phones: address, hours and tap-to-call on every page.

What is mobile SEO?

Mobile SEO is the work of making a website easy for search engines to crawl and index from its mobile version, and easy for people searching on phones to use once they arrive. Since Google indexes the mobile version of every site, mobile SEO is not a specialism. It is simply SEO done on the version that counts.

This checklist from Global Bridge Labs (GBL) is ordered by impact. Work down it in sequence. The first two sections protect what you already rank for. The later ones win clicks and enquiries.

• Why mobile-friendly web design is essential for UK businesses
• On-page SEO checklist for business websites

Can Google read everything on your mobile pages?

Start here, because nothing else matters if content is missing. Compare the mobile and desktop versions of your main pages and make sure the text, headings, internal links, images with alt text, structured data, titles and meta descriptions are equivalent. Google's guidance is that the mobile site should contain the same content as the desktop site.

• Same body text and headings on mobile as on desktop.
• Same internal links, including footer and in-page links.
• Same structured data, such as LocalBusiness and FAQ markup.
• Same title and meta description for each page.
• No primary content that loads only after a tap, swipe or click.
• No resources blocked from crawling on the mobile version.

• Mobile-first indexing: what it means for your business
• Schema markup for small business websites

Are your pages fast and stable on a phone?

Check Core Web Vitals on the mobile tab, not the desktop one. Google's thresholds for a good experience are a Largest Contentful Paint within 2.5 seconds, an Interaction to Next Paint of 200 milliseconds or less and a Cumulative Layout Shift under 0.1, each measured at the 75th percentile of real visits.

Mobile scores are almost always worse than desktop, because phones have slower processors and connections. The common causes are oversized hero images, heavy sliders, too many third-party scripts and web fonts that block the first paint.

• Run your top five pages through PageSpeed Insights on the mobile tab.
• Open the Core Web Vitals report in Search Console and read the mobile section.
• Compress and resize the largest image on each page.
• Remove scripts and plugins that nobody can explain.

• Core Web Vitals for business websites
• Why is your mobile PageSpeed score lower than desktop?

Can people use the page once they arrive?

Google's page experience guidance asks whether content displays well on mobile devices and whether pages avoid intrusive interstitials. In practice that means readable text, buttons a thumb can hit, nothing wider than the screen and no pop-up covering the page the moment someone lands from a search result.

• Body text at least 16px, with no pinching needed to read.
• Tap targets about 48px, with around 8px between them.
• No sideways scrolling at a 320px screen width.
• No full-screen pop-up on arrival, apart from legally required notices.
• Cookie banner sized so the page behind it can still be read.

• Intrusive interstitials: pop-ups Google marks down on mobile
• Tap target size: how big should buttons be on mobile?

Are your local signals ready for phone searches?

Phone searches skew local and urgent, so local signals carry more weight on mobile. Google says local results are based mainly on relevance, distance and prominence. Your website supports all three when it states clearly what you do, where you do it and how to reach you, and when those details match your Google Business Profile.

• Business name, address and phone number identical on site and profile.
• Phone number as a tap-to-call link in the header of every page.
• Opening hours and service areas in text, not in an image.
• A page per main service, and per location where you have real premises.
• LocalBusiness structured data on the contact or location pages.

• Local SEO for a small business website
• Near me searches: what your website must do on a phone

What should you check every month?

Mobile problems creep back in through small changes, so a short monthly check is worth more than a large annual audit. Use Search Console's Performance report filtered by device, and compare clicks, click-through rate and average position on mobile with the previous month.

• Mobile clicks and impressions against last month.
• Mobile click-through rate on your top ten queries.
• Core Web Vitals report: any pages newly marked poor on mobile.
• Indexing report: any new errors after template or plugin changes.
• One real-phone walk-through of your top landing page.

• Mobile and desktop in Search Console: how to read the gap

What can you safely ignore?

You can ignore AMP, which Google no longer requires for any feature a small business needs. You can ignore the retired Mobile-Friendly Test, which was withdrawn in December 2023. And you can ignore chasing a perfect 100 in PageSpeed Insights: passing the Core Web Vitals thresholds on real-user data matters more than the lab score.

Be wary of anyone selling 'mobile SEO' as a separate monthly service. On a responsive site, almost everything on this list is fixed once in the templates and then monitored. The ongoing work in SEO is content and links, which are the same on every device.

• Do you still need AMP pages? The answer for UK businesses

What does this look like in practice?

A pattern we see in local service firms: desktop rankings and mobile rankings look similar, yet mobile click-through is much lower. On a phone, the search result shows a truncated title that leads with the company name instead of the service, and the landing page opens with a full-screen offer pop-up.

Neither problem appears in a standard SEO report. Rewriting titles so the service and place come first, and delaying or removing the pop-up, lifts clicks and keeps visitors on the page. It is the kind of fix a person finds in two minutes with a phone.

• See client work
• Website Design & Development for UK businesses
• Make your website work properly on mobile

Next step

Work through the first two sections of this checklist this week. If your mobile pages are complete and fast, you have protected what you rank for, and the rest is improvement.