1. Ignoring Mobile‑First Design
Many sites launch full‑bleed desktop versions and then tinker with mobile later. The result? Tiny touch targets, overflowing text, and broken navigation.
2. Over‑complicated Navigation
Too many menu items or nested sub‑menus overwhelm users. Keep primary links to five or fewer and use a hamburger for secondary items.
3. Neglecting Feedback and Affordances
Buttons that look like text or links that look like buttons confuse users. Consistent visual cues and hover states are essential.
4. Poor Typography Hierarchy
Using the same font weight for headings and body text makes scanning difficult. Employ clear hierarchy and line‑height for readability.
5. Not Using Semantic HTML
Without <nav>, <header>, <section>, assistive tech struggles, hurting both accessibility and SEO.
6. Ignoring Loading Performance
Heavy images, unminified JS, and large CSS bundles slow the page. Use lazy loading and asset compression.
7. Skipping User Testing
Assuming design choices are obvious leads to friction. Conduct usability tests to uncover hidden pain points.