What is the scraper of the screen?
Scarkera screen is a computer program that collects data based on features from the output of another program. Scraphery screen can extract the data they are looking for and present it in richer format, such as graphs or tables, or simply indexing data for storage. There are many other names for a scraper on the screen, including a scraper of the website, the top of the content, the web pages, the web extractor, the automated data collector and the HTML scraper.
The screen scraper searches the website code and filters out the external code that is introduced to provide a nice -looking end browser presentation. Such a code is necessary to display the entire page in its intended layout, but the scraper simply looks for useful data. This data is collected and presented as a simple database, without bells and a whistle of the original HTML code. These spiders approach hundreds of thousands of websites, each containing numerous pages inside. Klíčo dataThe words of the words from these websites are collected and indexed, then introduced to the end user as the search engine results.
Most scrapers on the screen are looking for HTML coding on the web to get their information, but can also look for other scripting languages such as JavaScript or PHP. The data that is mined can then be presented as HTML itself, so the user has access to their web browser or stored as text data for which the user can be offline.
Businesses use scraps of screens to focus data from different websites related to keywords to generate graphs, charts, tables, and comparison data used in messages and presentations. The scraper of the screen saves an extraordinary time because an employee who performs the same task to find and record usable data they need. Scraper of the screen can also be used whenInformation is stored in a system that can no longer be accessed due to compatibility problems with newer hardware or software.
Scrapers screen can be a blessing curse for web owners and web surfers. Although they absolutely provide a functional service for companies, search engines and more, the screen scraper can also be used for less than altruistic purposes. For example, companies or individuals who use spam as an advertisement method
While the scraper of the screen can be a handy tool, there is a debate on legality and ethics between their use. Problems with copyright become blurred when a scraper of the screen extracts someone's hard work and represents it in another format for another website, and those sites that depend on advertising for income generation is eliminated by a scraper of the screen. As a result, some website owners have begun to implement tools that will prevent their pages from scraping their pages.