SEO
Indexing
Quick definition
Indexing is the process by which search engines add discovered pages to their searchable index, making them eligible to rank for queries.
A page must be crawled, parsed, and judged valuable before being indexed. Crawling alone doesn't guarantee indexing.
Why Indexing matters
Pages can be excluded by noindex tags, canonical conflicts, duplicate content, low-quality signals, or simply failing Google's content quality threshold.
How Indexing works in practice
Monitor indexing in Google Search Console's 'Pages' report. The categories ('Crawled — currently not indexed', 'Discovered — currently not indexed') reveal the specific issues to fix.
Best practices
- Check Search Console's index coverage report weekly.
- Submit fresh content via URL Inspection or sitemaps.
- Fix duplicate/canonical issues that suppress indexing.
- Improve content quality on partially indexed sections.
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Related terms
Canonical Tag
A canonical tag (<link rel='canonical'>) tells search engines which version of a page is the preferred, indexable URL when duplicate or near-duplicate versions exist.
Crawl Budget
Crawl budget is the number of pages a search engine bot will crawl on your site within a given period, based on crawl rate limit and crawl demand.
XML Sitemap
An XML sitemap is a structured file listing the URLs you want search engines to crawl and index, with metadata like last-modified dates and priority.
Mobile-First Indexing
Mobile-first indexing is Google's practice of primarily using the mobile version of a site's content for indexing and ranking.
Technical SEO
Technical SEO is the practice of optimizing a website's infrastructure — crawling, indexing, performance, and architecture — to improve search visibility.