Knowledge is power. Data is liberating." To realize access to the perfect pieces of data, you’re first going to wish to gather some data. Web scraping, data mining and web crawling are efficient methods that can help you simply compile and store info from websites on the internet.

In this piece we will investigate what is web scraping, the benefits and disadvantages of web scraping and among the beneficial use cases for scraping data.

What is web scraping?
Web scraping refers to creating or utilizing a computer software to extract data from complete websites or a couple of web pages. Also once you perform web scraping, you may either download all the web page or key facets such because the tag or article body content for additional analysis.


What are the benefits of web scraping for enterprise?
Achieve Automation
Robust web scrapers will let you automatically extract data from websites, this allows you or your co-workers to save time that will’ve have in any other case been spent on mundane data assortment tasks. It additionally means you can collect data at better volume than a single human may ever hope to achieve.

Also it’s potential so that you can create sophisticated web bots to automate online activities with either web scraping software or utilizing a programming language similar to javascript, python, go or php.

Business Intelligence & Insights
Web scraping data from the internet means that you can seek for competitor prices, monitor their marketing activity and to swiftly market research your business online. By downloading, cleaning and analysing data at significant volume, you’ll be able to build a better picture of your market, your competitor’s activity which in turn will lead to raised business decision making.

Distinctive and rich datasets
The internet provides you with a rich quantity of text, image, video and numerical data and at present contains at least 6.05 billion pages. Depending upon what your objective is, you'll find relevant websites, setup website crawlers and then make your own customized dataset for analysis.

For instance, let’s fake you’re keen on UK football and wish to understand the sports market in depth.

You could setup webscapers to collect the following information:

Video Content: To download all the football games from YouTube or Facebook.com.
Football Statistics: You may download your desired staff’s historical match statistics.
WhoScored – Goal Data.
SoccerStats.
Betting Odds: You could possibly collect the betting odds for football matches from bookmaker’s resembling Bet365 or from player betting exchanges reminiscent of Betfair or Smarkets.
Create applications for instruments that don’t have a public developer API
By web scraping data, you will by no means have to rely on the website releasing a public application programming interface (API) to access the data which they show on their webpages. There are several benefits to web scraping compared to accessing a public API:

You can access and gather any data that's available on their website.
You are not limited to a selected number of queries.
You don’t have to sign up for an API key or have to abide by their rules.
Efficient Data Administration
Instead of copying and pasting data from the internet, you may choose what data you'd like to gather from a range of websites, then you'll be able to accurately collect it with web scraping. For more advanced web scraping / crawling methods your data will be stored within a cloud database, and will likely be running on a daily basis.

Storing data with computerized software and programs implies that your company, operations or employees can spend less time copying and pasting data and more time on artistic work.

What are the disadvantages?
You will need to be taught programming, use web scraping software or to pay a developer
In case you are looking to gather and organise an unlimited quantity of knowledge from the internet, you will find that present web scraping software is limited in functionality. Though the software may be good for extracting a number of parts from a web page, as quickly as it's essential to crawl multiple websites they're less effective.

Therefore you will must either invest in learning web scraping methods in a programming language akin to javascript, python, ruby, go or php. Alternatively you can hire a contract web scraping developer, regardless both of these approaches will add an overhead to your data collection operations.

Websites usually change their construction and crawlers require upkeep
As websites commonly change their HTML structure, sometimes your crawlers will break. Whether you’re using web scraping software otherwise you’re writing the web scraping code, there's a certain amount of maintenance that needs to be commonly carried out to keep your data assortment pipelines clean and operational.

For each website that you just write a custom encoding script, adds on a certain quantity of technical debt. If lots of websites that you’re gathering data from all of a sudden determine to redesign their websites, you will have to invest in fixing your crawlers.