Web Harvesting, Data Scraper, Web Scraper, Website Scraper

There is huge amount of information which is freely available in internet and it

is spread over millions of web pages which have their own independent format and structure. It is difficult to find information which we need for in a custom format which we like. Though search engines can help in gathering data from web pages, there is lot of manual labor involved in copying data from web pages and converting them to format which we need. A simple solution particularly for companies which aim in extracting huge volume of data regarding competitors and markets is web harvesting. Web harvesting tools can be used to extract data from web pages and is much more powerful than a search engine. Web scraper can be used for automating the process of reading, copying the required data and pasting the information for the analysis. Web harvesting tools can be greatly helpful to gather information about the market prices, competitors data, customer information and financial information of all types. There are many Web Scraper software applications which are available freely in internet but customer website scrapper is required to scrap data from specific target websites and also to scrap data from online resources such as text files, product images, mp3 audios, videos, PDF files etc. Web data scraping is also called web scraping or web harvesting. The main purpose of website scraper is to converted unstructured website contents to structured information which can be stored in different spread sheets and databases. Website scrapper used scraping scripts which are written in different languages such as Perl, ASP, Java, Python etc. With the help of such scraping script, we can extract semi-structured or unstructured data from specific websites and then change them to structured data which are termed as records. The website scrapper script will search all web pages and search for desired information such as price details, contact information, product information, market data etc. Website scrapper can also be used to validate the structure of web pages by supplying the necessary input parameters. The harvested data from web pages can be converted to different formats like Microsoft word, Excel, Power point, CSV, XML file, text file or other database formats. Website scrapper is used by Government agencies for policy enforcement. Business owners make use of this tool for analysis of competitor products and developing marketing techniques. The consultancies can make use of website scrapper to get details about job posting from job portals.

Web harvesting can be of different types such as web structure harvesting, web content harvesting and web usage harvesting. Web content harvesting is focused towards particular content of web documents like HTML files, email messages, images, product prices etc. Since the web documents are mostly unstructured, general approach is using the information which is already known regarding the general structure of the documents and associating them with particular data model. Web harvesting tools can act like enhanced search engines that perform keyword extraction and generation of simple statistics relating to the keywords and phrases in web documents. Web structure harvesting is focused on structure of web pages and analyzes the popularity of web pages based on the number of inbound and outbound links. Another important technique which is called web usage harvesting gather information from web servers regarding user interactions in order to understand the behavior of users.

by: 3idatascraping

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