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What Is Screen Scraping Used for and How to Build One?

Thursday, January 21, 2021

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Screen scraping

Screen scrapers

Scraping data no-coding



Screen Scraping

It usually refers to parsing the HTML in generated web content with programs designed to mine out specific patterns of content.

Screen scraping is the method of collecting screen display data from one application and translating it so that another application is able to display it. This is normally done to capture data from a legacy application in order to display it using a more modern user interface.

It is sometimes confused with content scraping, which is the use of manual or automatic means to rip content from a website without the approval of the website owner. Quite often, screen scraping refers to a web client that parses the HTML pages of the targeted website to extract formatted data.


Screen Scrapers

screen scraper is a computer program that uses a screen scraping technique to translate between legacy application programs (written to communicate with now generally obsolete input/output devices and user interfaces) and new user interfaces so that the logic and data associated with the legacy programs can continue to be used.





In the early days of PC's, screen scrapers would emulate a terminal (e.g. IBM 3270) and pretend to be a user in order to interactively extract, update information on the mainframe. In more recent times, the concept is applied to any application that provides an interface via web pages.


Scraping Data No-coding

If you want to try scraping, Octoparse enables you to work with dynamic unstructured data by just clicking on single data points and it will automatically generate efficient code to extract data. No coding is required in this process. Also, it allows you to export data to formats of your choice like Excel, JSON, CSV, TXT, HTML, even directly to your database via API.


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More Resources

Top 20 Web Scraping Tools to Scrape the Websites Quickly

Top 30 Big Data Tools for Data Analysis

Web Scraping Templates Take Away

How to Build a Web Crawler - A Guide for Beginners

Video: Create Your First Scraper with Octoparse 7.X




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