Technical SEO Checklist: 15 Items Before Launch

A fifteen-minute check on launch day saves the next six months.

The checklist

• robots.txt does not block crawling
• The staging noindex tag has been removed
• XML sitemap generated and submitted to Search Console
• One H1, meaningful title and description per page
• Canonical tags are correct
• hreflang defined on multilingual pages
• Old URLs 301-redirect to new ones
• Custom 404 page returning a 404 code
• HTTPS enforced, no mixed content
• Alt text and dimensions on images
• Structured data (Organization, Article, BreadcrumbList) error-free
• Core Web Vitals green on mobile
• Analytics and Search Console verified
• Internal links and menu depth no deeper than 3
• Page weight under 2 MB