The most important technical SEO checks for crawlability and indexing are these:
- Google Search Console coverage/indexing status: check which URLs are indexed, excluded, or showing errors.
- robots.txt: make sure important pages and critical resources are not blocked.
- XML sitemap: submit a clean, up-to-date sitemap and confirm it is being read properly.
- Canonical tags: verify they point to the correct preferred URL and do not create conflicts.
- HTTP status codes: confirm important URLs return 200 OK and fix broken pages, server errors, redirect chains, and loops.
- Internal linking and orphan pages: ensure key pages are reachable through links and not left isolated.
- Meta robots / noindex directives: check that pages intended for indexing are not accidentally set to noindex.
- JavaScript rendering: verify that important content and internal links are visible to search engines after rendering.
- Duplicate versions of the site: resolve issues such as http vs https, www vs non-www, and other duplicate URL variants.
- Crawl depth and site architecture: make sure key pages are not buried too deep in the site structure.
A practical audit usually starts with Google Search Console, then checks robots.txt, sitemap, canonicals, status codes, internal links, and renderability in that order.
If you want, I can turn this into a prioritised technical SEO checklist for a website audit.
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