The DIY Mobile-Friendly Website Audit for Small Business Owners (7 Critical Checks)
- Garrison Brinton
- Dec 15, 2025
- 2 min read
For the small business owner, your website is your 24/7 storefront. Since Google uses mobile-first indexing and over half your traffic comes from phones, if your site isn't perfectly mobile-friendly, you are losing customers and visibility.
You don't need a developer to spot the major flaws. Here is a simple, DIY website audit checklist focusing on the 7 critical mobile-friendliness checks.

Tool Needed: Your Smartphone (and Google's Free Tools)
Perform this audit directly on your own phone.
Audit Check | Problem (Why it Matters) | DIY Test & Fix |
1. The Thumb Test (Tap Targets) | If clickable elements (buttons, menu items, links) are too close, users will tap the wrong thing and get frustrated. | Test: Try navigating your whole site using only your thumb. Fix: Ensure buttons are at least 48px×48px and have ample space around them. |
2. Page Speed (Loading Time) | The most critical factor. Slow load times (over 3 seconds) lead to massive visitor abandonment and poor SEO. | Test: Use Google's free PageSpeed Insights tool. Fix: Compress all images (under 200KB is a good goal). Delete unused plugins or themes. |
3. Text Readability (Font Size) | Tiny fonts force zooming, which is a major point of friction for mobile users. | Test: Can you comfortably read all body text without zooming in? Fix: Use a default font size of at least 16px for body copy. Use short paragraphs. |
4. Viewport Settings (Content Fit) | If the user has to scroll left and right to see all the content, the viewport is not set correctly. | Test: Scroll down your main pages. Does the content flow neatly down, or does it require horizontal scrolling? Fix: Ensure your website theme is truly responsive (it auto-adjusts to the screen size). |
5. Pop-Up Interruption (Interstitials) | A full-screen pop-up that appears immediately on a mobile device is highly penalized by Google and infuriates users. | Test: Visit your site. Does a pop-up instantly block the content? Fix: Use small banners or slide-ins, not full-screen pop-ups. Ensure they are easy to close with one tap. |
6. The CTA Visibility | The primary goal button (Call-to-Action) should be visible on every screen, even when scrolling. | Test: Scroll down a service page. Does the "Contact Now" or "Book a Quote" button disappear? Fix: Use a sticky CTA bar at the top or bottom of the mobile screen. |
7. Phone Number Clickability | A huge oversight for local service businesses. Mobile users should be able to tap a phone number to call immediately. | Test: Tap your listed phone number. Does it instantly prompt a call? Fix: Ensure the number is a click-to-call link (the link code is tel:1234567890). |
A mobile-friendly website isn't just a recommendation; it's the cost of entry for successful digital marketing. Fixing these 7 issues will immediately boost your conversion rate and SEO visibility.




