A crawler, also known as a spider or web crawler, is a software program that systematically browses the internet or a specific website to index and gather information, such as web pages, images, or documents. Crawlers are commonly used by search engines to build and update their indexes.
Example: Search engine crawlers like Googlebot crawl the web to discover and index web pages and content. They follow links on a webpage and collect information, which is then used to populate search engine results.
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