Indexing is the process by which search engines organise information before a search to enable super-fast responses to queries. Searching through individual pages for keywords and topics would be a very slow process for search engines to identify relevant information.

What is indexing in Google search engine?

A page is indexed by Google if it has been visited by the Google crawler ("Googlebot"), analyzed for content and meaning, and stored in the Google index. ... While most pages are crawled before indexing, Google may also index pages without access to their content (for example, if a page is blocked by a robots.

What is indexer in SEO?

In layman's terms, indexing is the process of adding web pages into Google search. Depending upon which meta tag you used (index or NO-index), Google will crawl and index your pages. A no-index tag means that that page will not be added to the web search's index.