A practical guide to the GSC status "Duplicate without user-selected canonical": why Google picks a different canonical, the most common duplication patterns (hosts, params, archives), and how to validate the fix.
A practical guide to "Redirect error" in Google Search Console: why it happens (loops, chains, timeouts), how to diagnose quickly, and how to make redirects deterministic without breaking canonicalization.
A practical map of Google Search Console indexing statuses (Coverage): what each status means, the most common root causes (canonicals, duplicates, robots, redirects, soft 404s), and the fastest way to validate fixes.
A practical guide to the GSC status "Indexed, though blocked by robots.txt": why it happens, why blocking can freeze bad URLs in the index, and the safest resolution paths (allow crawl + noindex vs allow crawl + index).
A practical guide to the GSC status 'Not found (404)': how to classify URLs (keep/move/remove), when to 301 vs 410, and how to stop crawl waste.