= Web crawlers start from a loss of known URLS and crawl these webpages first. After this, web crawlers find hyperlinks to other URLS, and the next step is to crawl them. As a result, this process can be endless. This is why web crawlers will follow particular rules. For example, what pages to crawl, when they should crawl these pages again to check for content updates, and much more. Furthermore, a web crawler can be used by companies that need to gather data for their purposes. In this case, a web crawler Is usually accompanied by a web scraper that downloads, or scrapes, required information.
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| Web Crawler |
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