Technical
Indexation
Also known as: indexing, Google index inclusion
Indexation is the process by which search engines add discovered URLs to their searchable index. A page that's crawled isn't automatically indexed; Google decides per-URL whether the content is worth including based on quality, uniqueness, internal linking signals, and canonical status. In 2026 Google indexes substantially fewer pages than it crawls, discovery does not equal inclusion.
How indexation works
- Discovery, crawler finds the URL (via sitemap, internal link, external link)
- Crawl, crawler fetches the page content
- Rendering, JS-heavy pages get a second-wave render
- Processing, Google evaluates quality, uniqueness, canonical status
- Index decision, included, excluded, or queued for later
Each step can fail. Search Console’s Coverage report shows where pages drop off.
Common Coverage report states
| Status | Meaning |
|---|---|
| Indexed, submitted in sitemap | Working as expected |
| Indexed, not submitted in sitemap | Found via links, sitemap missing |
| Excluded by ‘noindex’ tag | You asked Google not to index |
| Crawled, currently not indexed | Quality threshold not met (common in 2024-2026) |
| Discovered, currently not indexed | Crawl budget didn’t get there |
| Duplicate, Google chose different canonical | Your canonical hint was overridden |
| Alternate page with proper canonical | Self-explanatory |
| Soft 404 | Page returned 200 but content looks like an error |
What causes pages to be crawled but not indexed
- Thin content / low quality
- Near-duplicate of other pages
- Conflicting signals (canonical, hreflang, redirects)
- Spammy or boilerplate content
- Helpful Content Update flagged
- Site-wide quality issues affecting individual pages
Recovery
If specific pages aren’t indexed:
- Manually request indexing via GSC URL Inspection (limited daily quota)
- Improve internal linking to those pages
- Add unique data/insights to thin pages
- Verify canonical signals are consistent
- Submit a fresh sitemap
If sitewide indexation is dropping, that’s usually a Helpful Content / quality signal, content audit is the answer, not technical fixes.
Related terms
Apply in practice
- Resocial service →
/services/seo/technical-seo/ - Read on the blog →
/blog/technical-seo-vs-on-page-seo/