Web crawler

Not to be confused with offline reader. For the search engine of the same name, see WebCrawler.

A Web crawler is an Internet bot which systematically browses the World Wide Web, typically for the purpose of Web indexing.

Web search engines and some other sites use Web crawling or spidering software to update their web content or indexes of others sites' web content. Web crawlers can copy all the pages they visit for later processing by a search engine which indexes the downloaded pages so the users can search much more efficiently.

词汇	RBSE
分类	英语词汇英语翻译词典
释义	RBSE 英语百科 Web crawler Not to be confused with offline reader. For the search engine of the same name, see WebCrawler. A Web crawler is an Internet bot which systematically browses the World Wide Web, typically for the purpose of Web indexing. Web search engines and some other sites use Web crawling or spidering software to update their web content or indexes of others sites' web content. Web crawlers can copy all the pages they visit for later processing by a search engine which indexes the downloaded pages so the users can search much more efficiently.
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RBSE

Web crawler