1. Mobile Usability

Why it matters:

Over 60% of global traffic is mobile. If your product isn’t mobile-optimized, you’re losing users.

What to check:

• Are tap targets large enough (at least 48x48px)?

• Is your layout responsive across screen sizes?

• Do key actions (sign up, add to cart, book a service) work seamlessly on mobile?

• Pro Tip: Test on real devices, not just browser resizers.

2. Accessibility (A11y)

Why it matters:

Inclusive design isn’t optional — it’s essential. Accessibility improves UX for everyone.

What to check:

• Are color contrasts WCAG 2.2 compliant (4.5:1 for body text)?

• Can all interactions be done with a keyboard?

• Do images have meaningful alt text?

• Are forms and buttons screen reader-friendly?

• Tool tip: Use WAVE or axe DevTools to scan your pages.

3. Page Load Speed

Why it matters:

• A 1-second delay in load time can reduce conversions by up to 20%.

• What to check:Are images optimized and lazy-loaded?

• Is your site using efficient caching and compression (like Gzip)?

• Is Core Web Vitals showing green across the board?

• Use PageSpeed Insights or Lighthouse to benchmark.

4. User Flows

Why it matters:

Users want to accomplish tasks with the least friction possible. Confusing flows kill conversion.

What to check:

• Can a user complete the main task (e.g., checkout, booking, signup) in under 3 clicks?

• Are there any unnecessary steps or decisions?

• Do your CTAs match user intent on each screen?

• Try a simple task: Ask a friend to use your site without instructions. Watch where they get stuck.

5. Content & Microcopy

Why it matters:

Good UX isn’t just about visuals   words guide actions.

What to check:

• Are headlines clear and benefit-driven?

• Do buttons have action-oriented text (e.g., “Get Started” vs “Submit”)?

• Are error messages helpful and human?