What are the biggest risks and mistakes in website redesign projects?

The biggest risk in a website redesign is organic search ranking loss caused by URL structure changes, removed content, or altered internal linking patterns without proper 301 redirect mapping. Sites that redesign without an SEO migration plan frequently see 20 to 40% drops in organic traffic in the months following launch, recovering slowly over 6 to 12 months.

Other critical mistakes include: redesigning based on aesthetic preference rather than behavioral data, failing to conduct user testing on the new design before launch, not archiving existing analytics baselines for post-launch comparison, and scoping the project without documenting all existing page templates and CMS requirements. Rushing the QA phase to meet a launch deadline is another common failure point, particularly for responsive design testing, cross-browser compatibility, and form functionality verification.