Semalt – How To Scrape With Chrome Scraper
Web scraping has become an important extracting tool for web searchers who want to extract content from the internet quickly. Chrome Scraper offers them a great option to get the data they need and convert a page on the web into a database for further analysis. Users need to make sure that they use a recent version of Chrome with the scraper extension tool.
How to Collect Relative Content
To use Scraper, web searchers need to identify a table from which they wish to gather data. Then, they can export the content to a Google Doc, to copy and paste a certain table into Excel. Users can use XPath, which is a language that locates certain elements in XML files. For example, they can create an XPath query, to find specific rows or tables with certain attributes. In fact, it's a great way to slice up texts on a web page. XPath tries to guess what kind of content web searchers wanted to extract.
How to Plan a Sitemap
Web searchers can setup a sitemap to navigate a certain website and find all the relative information they need. The scraper traverses the website and extracts all the relevant data. It can even extract data from dynamic pages that use Javascript and Ajax and dynamic pages.
Scraping Certain Contents from Websites
By using various selectors the web scraper can navigate a number of websites to get all the relative data, like lists, contents, images and tables. Every time the scraper opens a new page, users have to mine certain elements. Then, scraped data can be exported as CSV formats. This data scraper is very simple, effective and powerful extracting tool. It offers a number of advantages, such as contact lists, prices, products, emails and more. This structure, called DOM (Document Object Model), can help web searcher to climb up and down and they can also have the option to jump to other branches as well. Actually it serves like a 'tree'; It offers the chance to users to find tiny leaves of a tree. Chrome extension can help them find in the tree they wish to start scraping. Once they gather all the data they need, they might want to save them for further analysis. Therefore, they need to click on 'presets' and give a name to their scraper.
How to Scrape Multiple Pages
To extract information out of multiple web pages, users need to follow a certain procedure. For instance, first, they have to get all the URLs for the web pages with the scraper extension and then they can extract the data to certain formats. If the web pages provide them with links to other similar pages, web searchers can use pagination in order to follow through to the next page. For example, they can generate a list of URLs, in order to scrape and then paginate through results.
Web searchers can use this tool in an easy way. They can find clear data, like tables, in a few seconds. They can copy them and past them directly into a spreadsheet program.
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