Run a full-site crawl with Screaming Frog or Sitebulb first. Export all URLs, status codes, redirect chains, and page titles. You're looking for 404s, redirect loops, orphaned pages, duplicate content, and thin pages under 200 words. Cross-reference this crawl data with Google Search Console's Index Coverage report to find pages Google can't index and why. Next, audit Core Web Vitals through PageSpeed Insights and Chrome UX Report data in Search Console. Check LCP (should be under 2.5s), CLS (under 0.1), and INP (under 200ms). Most Canadian e-commerce sites we audit fail on LCP due to unoptimized hero images or render-blocking JavaScript. Run tests on both mobile and desktop since Google indexes mobile-first. Check your XML sitemaps and robots.txt file. Verify that priority pages are included in sitemaps, non-indexed pages are properly disallowed, and you're not accidentally blocking Googlebot from critical resources. Validate structured data with Google's Rich Results Test for products, articles, local business markup, and breadcrumbs. Audit internal linking by analyzing crawl depth distribution. Critical pages should be maximum three clicks from the homepage. Export your internal link graph and identify pages with zero internal links (orphans) or pages receiving disproportionate link equity that don't deserve it. Review technical fundamentals: HTTPS implementation, canonical tags (self-referencing on originals, pointing to originals on duplicates), hreflang tags for multi-language sites, meta robots directives, and XML sitemap submission status. Check server response times in Search Console's Crawl Stats report. Consistent spikes above 400ms indicate hosting issues. For our portfolio sites, we run quarterly full audits and monthly spot-checks on high-value page clusters. The crawl alone on a 5,000-page site takes 30–90 minutes depending on server speed. Fixing critical issues (broken canonicals, crawl blocks, mobile usability failures) typically lifts organic traffic 15–40% within 60 days if content quality is already solid.