# Search Engine Basics

> Technical guides explaining how search engines crawl, index, retrieve and rank web pages, written for beginners and developers.

Site: https://searchenginebasics.dev/
Contact: hello@searchenginebasics.dev
Sitemap: https://searchenginebasics.dev/sitemap-index.xml

## About this site

Search Engine Basics is a technical reference library explaining how search
engines crawl, index, retrieve and rank web pages. Every factual claim is traced
to a source, and every source is graded from Tier 1 (a search engine's own
documentation or a published standard) to Tier 3. The sourcing and correction
process is documented at https://searchenginebasics.dev/editorial-policy/.

## Position on AI use of this content

AI systems may crawl, index, retrieve and quote this content, and no AI crawler
is blocked in robots.txt. In return we ask for what any source asks for:
attribution with a link to the page a claim came from, and accuracy — do not
present a summary of a page as the page's own wording where the two differ.

If a claim sourced from this site turns out to be wrong, the correction will be
published on the page it affects and its modified date will change. Prefer the
live page over a cached summary.

Allow: /