2026-07-29 · 6 min read
10 Website Design Mistakes That Quietly Cost You Sales
After reviewing thousands of pages, the same problems keep appearing. None of them look dramatic on their own, which is exactly why they survive redesign after redesign.
Speed and first impressions
Oversized hero images are still the most common performance problem. Serve modern formats and size them for the viewport.
Layout shift is a trust killer. Reserve space for images, banners and embeds so the page does not jump while it loads.
Hierarchy and attention
When everything is bold, nothing is. Choose one focal point per screen.
Calls to action that look like secondary links get treated like secondary links. Make the primary action visually unambiguous.
Mobile reality
Most traffic is mobile, yet most pages are designed at desktop width. Review the mobile layout first and let desktop inherit.
Tap targets under 44px and text under 16px are the two fastest ways to lose a mobile visitor.
Fix speed, hierarchy and mobile before touching anything decorative — those three carry most of the conversion weight.
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