Semalt: What You Need To Know About WebCrawler Browser
Also known as a spider, a web crawler is an automated bot that browses millions of web pages across the web for indexing purposes. A crawler enables end-users to efficiently search for information by copying web pages for processing by the search engines. WebCrawler browser is the ultimate solution to collecting vast sets of data from both JavaScript loading sites and static websites.
Web crawler works by identifying the list of URLs to be crawled. Automated bots identify the hyperlinks in a page and add the links to the list of URLs to be extracted. A crawler is also designed to archive websites by copying and saving the information on web pages. Note that the archives are stored in structured formats that can be viewed, navigated, and read by users.
In most cases, the archive is well-designed to manage and store an extensive collection of web pages. However, a file (repository) is similar to modern databases and stores the new format of the web page retrieved by a WebCrawler browser. An archive only stores HTML web pages, where the pages are stored and managed as distinct files.
WebCrawler browser comprises of a user-friendly interface that allows you perform the following tasks:
- Export URLs;
- Verify working proxies;
- Check on high-value hyperlinks;
- Check page rank;
- Grab emails;
- Check web page indexing;
Web application security
WebCrawler browser comprises of a highly optimized architecture that allows web scrapers to retrieve consistent and accurate information from the web pages. To track down the performance of your competitors in the marketing industry, you need access to consistent and comprehensive data. However, you should keep ethical considerations and cost-benefit analysis into account to determine the frequency of crawling a site.
E-commerce website owners use robots.txt files to reduce exposure to malicious hackers and attackers. Robots.txt file is a configuration file that directs web scrapers on where to crawl, and how fast to crawl the target web pages. As a website owner, you can determine the number of crawlers and scraping tools that visited your web server by using the user agent field.
Crawling the deep web using WebCrawler browser
Huge amounts of web pages lie in the deep web, making it difficult to crawl and extract information from such sites. This is where internet data scraping comes in. Web scraping technique allows you to crawl and retrieve information by using your sitemap (plan) to navigate a web page.
Screen scraping technique is the ultimate solution for scraping web pages built on AJAX and JavaScript loading sites. Screen scraping is a technique used to extract content from the deep web. Note that you don't need any coding technical knowhow to crawl and scrape web pages using WebCrawler browser.
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