Why is my site not on Google? An indexing diagnostic

The symptom: the site (or one page) is live, loads fine in a browser, and simply does not appear on Google. Indexing is where most site-owners lose weeks to the wrong fixes. The diagnostic order below finds the actual blocker, from hardest block to softest.

Step 1: ask Google what it thinks

Search site:yourdomain.com. Results exist but the page is missing? That is a per-page problem. No results at all? That is a site-wide one — proceed in order. Then open Google Search Console (free), verify the site, and use URL Inspection on the exact page: Google states directly whether the URL is indexed, and if not, names the reason. Everything after this step is faster with Search Console open; its coverage report is the single most honest instrument in SEO.

Likely causes, most common first

1. The page says "noindex" (very common after redesigns/migrations): a <meta name="robots" content="noindex"> left over from staging, or an X-Robots-Tag header doing the same silently. View-source and check; header checkers show the header variant.

2. robots.txt blocks crawling (common): a Disallow aimed at staging that survived launch. Note the subtlety: robots.txt stops crawling, noindex stops indexing — and a page blocked from crawling can still appear as a bare URL if someone links to it. Fix them in that order: unblock crawl, and let (or tell) Google index.

3. The page is not reachable as a link (common on small sites): Google finds pages chiefly by following links. If nothing internal links to the page and it is not in the sitemap, it may simply never be discovered. Every page on this desk sits in a sitemap and at least one shelf — internal linking is indexing plumbing, not decoration.

4. Canonical points elsewhere (occasional): the page declares rel=canonical to another URL, and Google obeys. Check that the canonical is the page itself (or deliberately the preferred twin).

5. The sitemap is stale or wrong (common): sitemaps that list pages which redirect or 404 teach Google to distrust them. The honest pattern this desk ships: every page in the sitemap exists, is canonical, is indexable — enforced by a validator at build time, so drift is impossible. A sitemap is a promise; keep it machine-checked.

6. It is simply too new (the honest one): new domains can take days to weeks for a first crawl and indexing; sitemap submission in Search Console plus one real external link shortens the wait. Nothing you buy accelerates it — anyone selling "instant indexing" is selling noise.

7. Quality filters (the uncomfortable one): thin, duplicated or scraped pages can be crawled and deliberately left out of results. The fix is the hard one: make the page deserve the query — the question this desk applies to every page before publishing is whether a real person would bookmark it.

When the fix will not work

Manual actions (visible in Search Console) and security hacks require a reconsideration process, not a tag change. And no diagnostic fixes a page whose answer nobody searches for — indexability is necessary, never sufficient.

Official documentation (checked 11 September 2026): Google Search Central's indexing and crawl-management docs (developers.google.com/search/docs) and Search Console Help (support.google.com/webmasters). Companions on this desk: check if Google indexed a page and sitemaps and IndexNow, explained.