Technical SEO: the complete guide to crawl, render, index

If Googlebot cannot reach a page efficiently, nothing else matters. Audit robots.txt, meta robots and X-Robots-Tag headers, orphaned pages (reachable from nowhere internal), and crawl traps — calendars, facet spirals and parameter soup that waste crawl budget on URLs that should never have been crawled.

Log-file analysis, where available, turns speculation into fact: which URLs Google actually requests, how often, and where budget is being burned.

JavaScript frameworks render pages in phases. Audit what the raw HTML contains versus what appears after hydration — Google does render JavaScript, but rendering costs budget and adds failure modes. Server-side rendering or static generation for money pages remains the safest default; our own site is built this way on Next.js.

• Site: operator and Search Console Coverage reports to size the indexed set.
• Canonical logic: one self-referencing canonical per page, no chains, no conflicts with hreflang.
• Internal linking: important pages within three clicks of the homepage, descriptive anchors.
• Sitemaps: clean, canonical-only, segmented by template for large sites.

Measure field data (CrUX), not lab scores. LCP: preloading the hero asset, responsive images, deferred third-party scripts. INP: breaking long tasks, reducing hydration cost. CLS: dimensions on media and reserved space for embeds. Validate each fix against 28-day field data before declaring victory.

Implement Organization, WebSite, Service, FAQPage, Product and BreadcrumbList schema where they genuinely apply — validated in Search Console's rich results reports, monitored for eligibility drops after every deploy.

One-to-one URL mapping, redirect chains flattened to single hops, staging crawls before launch, monitoring for 30 days after. Done properly a migration is a momentary dip; done carelessly it is a year of recovery.