How Search Engines Work - The Beginners Guide to SEO. Search engines have two major functions: crawling and building an index, and providing search users with a ranked list of the websites they've determined are the most relevant.
Imagine the World Wide Web as a network of stops in a big city subway system. Each stop is a unique document (usually a web page, but sometimes a PDF, JPG, or other file). The search engines need a way to “crawl” the entire city and find all the stops along the way, so they use the best path available—links. Crawling and IndexingCrawling and indexing the billions of documents, pages, files, news, videos, and media on the World Wide Web. Term Extractor SEO Tool. Get started with our free SEO tools.
Explore your link profile, dive into your social media analytics, and more. Open Site Explorer Identify content and link building opportunities. Research and compare competitor backlinks, identify top pages, view social activity data, and analyze anchor text. Free SEO Software Tool & Text Browser, Search Engine Optimization Tools - SEO Browser.