Crawling, indexing, migrations and site audits: the technical work that decides whether a page can rank at all.
Google groups crawl responses as good, possibly good and bad, and 404 sits in the middle. Here is what the documentation says Googlebot does with each status code, which errors actually cost you indexing, and the redirect-chain arithmetic that shows where three quarters of a crawl can disappear.
Google’s documentation states plainly that there is no single page experience signal, and lists six questions instead. Here are those questions in Google’s words, the current Core Web Vitals thresholds, and the arithmetic showing how much of a passing site’s traffic still gets a bad experience.
Internal linking for SEO is about where links start, not how many you add. Google’s own guidance in its words, a 106-page PageRank model showing one homepage link beating twenty contextual links, anchor text rewrites and the seven-step audit I run.
Alternate page with proper canonical tag means your canonical is working and Google agrees. That is true for each URL. Three yes or no checks, combined into an eight-case table, tell you when the bucket as a whole is a warning.
Crawled, currently not indexed means Google fetched the page and declined it for now. Resubmitting does nothing. A per-template rate table shows where the problem actually lives, and why the 1,000-row export misleads.
Every rule the robots meta tag carries can be sent as an X-Robots-Tag HTTP header, and the header works on files where a meta tag is impossible. Here is Google’s full directive list, the conflict rule in its own words, an inventory model showing how much of a typical site only the header can reach, and the robots.txt mistake that silently cancels it.
An SEO content audit has five possible outcomes per URL and Google documents what each one does. Here are those quotes, a table of what each decision actually changes about crawling and indexing, and a 2,000-URL model showing why rewriting the tail costs 300 times more per click defended than improving the head.
International SEO comes down to two decisions: where the localised versions live, and whether the annotations linking them are reciprocal. Here is what Google documents about each URL structure, and the arithmetic that shows why a one percent hreflang error rate is not a one percent problem.
Google processes JavaScript in three separate phases, and the gap between crawling and rendering is where most JavaScript SEO problems live. Here is what the documentation actually says, the branching arithmetic that shows what deferring your links costs, and the five patterns that break.
What “Duplicate without user-selected canonical” means in Google’s own words, why most of it is working as intended, and a sampling method that finds the share of the report that is costing you rankings.