Why Is Mobile-First Design a Must?
More than 70% of internet traffic in Türkiye comes from mobile devices. Google has used mobile-first indexing since 2019, meaning it evaluates and ranks your site by its mobile version first.
A website that isn't mobile-friendly loses its users and also slips down the Google rankings. Here are the 10 golden rules of designing a mobile-friendly website.
1. Use Responsive Design
Responsive design means your site automatically adapts to every screen size. Instead of building a separate mobile site, serve all devices from a single site.
Build flexible layouts with CSS Flexbox and Grid. Define styles specific to different screen sizes using media queries. Setting breakpoints at 768px (tablet) and 1024px (desktop) is a good start.
2. Keep Touch Targets Large
On mobile, buttons and links are tapped with a finger, not a mouse cursor. Google recommends touch targets of at least 48x48 pixels. The spacing between targets should be at least 8 pixels.
Pay particular attention to this rule in the navigation menu, form buttons and CTA (call-to-action) areas. Small targets annoy users and make them leave your site.
3. Optimise Page Speed
Mobile users often browse over 4G or slower connections. It is critical that your page loads within 3 seconds. Every second beyond that costs you visitors.
What to do for speed:
- Convert images to WebP and optimise their dimensions for mobile screens
- Apply lazy loading; load images that aren't visible on screen later
- Minify and compress CSS and JavaScript files
- Inline the critical CSS
- Keep third-party scripts to a minimum
4. Use Readable Typography
Use a minimum font size of 16px on mobile. Smaller sizes are hard to read on most devices and the browser zooms in automatically. Keep line height (line-height) between 1.5 and 1.6. Line length should be between 35 and 40 characters.
5. Simple and Accessible Navigation
Use a hamburger menu on mobile, but always keep the most important pages (such as contact and get a quote) visible. Menu depth should be 2-3 levels at most. The user should always know which page they are on.
6. Keep Forms Simple and Short
Long forms on mobile are hard and tedious to fill in. Ask only for the fields you really need. Enable autocomplete. Bring up the numeric keyboard for the phone number field (type="tel") and show the email keyboard for the email field (type="email").
7. Avoid Pop-ups and Interstitials
Google penalises sites that use full-screen pop-ups (interstitials) on mobile. Pop-ups that open as soon as the page loads in particular both ruin the user experience and hurt SEO. Prefer small notices at the bottom or side of the page instead.
8. Think About the Thumb Zone
Users usually hold their phones with one hand and operate them with the thumb. The bottom and middle of the screen are the easiest areas to reach. Place important interaction elements (CTA buttons, navigation) in these zones.
9. Optimise Images for Mobile
There is no point in showing a 2000px-wide image prepared for desktop on mobile. Use the srcset and sizes attributes to serve images of different sizes to different screen sizes. This saves bandwidth and improves page speed.
10. Test on Mobile Regularly
Don't test your site only on your own phone. Check how it looks on different devices and screen sizes. Chrome DevTools' device simulation, tools like BrowserStack and Google's Mobile-Friendly Test can help with this.
Conclusion
A mobile-friendly website is no longer a choice but a necessity. By applying these 10 rules you both keep your users happy and improve your Google rankings. For professional mobile-friendly website design, you can get in touch with Kayısı Web.