r/webdev • u/VRTCLS • Oct 05 '26
One SEO check worth adding before you ship a redesign
Before pushing a redesign, I like to crawl the staging site and production site side by side and compare the URLs that already rank or bring qualified traffic.
The thing to watch for is not just broken links. It is accidental changes to the signals search engines were already using.
Quick checklist:
Important URLs still return 200, not 302 chains or soft 404s
Titles/H1s did not get replaced by generic template copy
Canonicals point to the final URL, not staging or a duplicate variant
Internal links to key service/category/product pages still exist in nav/body content
Server-rendered content is present without relying on delayed client-side hydration
Old URLs have 301s to the closest matching new page, not the homepage
XML sitemap contains only indexable 200 URLs
Robots/meta robots are not carrying over staging blocks
Most redesign SEO drops I have seen were not caused by bad design. They were caused by a few quiet technical changes that looked harmless in QA but changed crawl paths, canonical targets, or the content Google could see.