A webcrawler is a software program that is written is a programing language such as Java. It is made up of several lines of code that give it instructions on what to search and what for. It is designed to search for certain types of information on web pages, such as keywords, key phrases, meta tags,hyper links and descriptions. That is one type, but there are others that perform other tasks as well.When it searches pages from a website, it will also follow any links that might lead to other relevant content. Linked pages are usually similar in content.
You can use webcrawler software to search the web for audio files, video files and any type of data or text files. You can set the search parameter to look for information similar to the page you are viewing.
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