Desmond  Gerber

Desmond Gerber

1618647803

Web Scraping 101: Introduction to Puppeteer

This article wades into the thigh-high waters of web scraping using Node.js and Puppeteer. First, we will cover the basics of setting up a Puppeteer project in VS Code. Then, we will write some code to perform login, data scraping, and pagination with Puppeteer on http://quotes.toscrape.com.

If you have found your way to this article, you likely know what Puppeteer is. But for those of you stumbling in, brand new to Puppeteer — Puppeteer is a Node library that provides users an easy and accessible API to control Chrome or, its lesser-known twin, Chromium without an actual browser window (headless). The headless browser functionality has a variety of use cases for hackers and developers alike. However, it has no use in this introductory demonstration! Instead, we will use a full browser configuration.

For this demonstration, you will need to have  Node.js installed on your computer as well as VS Code, or your preferred IDE. (Need to download? Click the link.) Also, open up the  Puppeteer docs for reference.

Let’s just get to the code already.

#web-development #nodejs #javascript

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Web Scraping 101: Introduction to Puppeteer
Lia  Haley

Lia Haley

1598436960

5 Puppeteer Tricks That Will Make Your Web Scraping Easier

Puppeteer probably is the best free web scraping tool on the internet. It has so many options and is very easy to use once you get the hang of it. The problem with it is that it is too complicated and the average developer might be overwhelmed by the vast options it offers.

As a veteran in the web scraping industry and the proxy world, I’ve gathered five puppeteer tricks (with code examples), which I believe help you with the daunting task of web scraping when using Puppeteer and how they will help you avoid detection.

So, What is Puppeteer?

Puppeteer is an open-source Node.js library developed and maintained by Google. It is based on Chromium, the open version of Chrome, and can do almost any task a human can perform on a regular web browser. It has a headless mode, which allows it to run as code in the background, without actually rendering the pages, and thus reduces a lot of the resources needed to run it.

Google’s maintenance of this library is fantastic, with new features and security updates regularly added a clear and easy-to-use API, and user-friendly documentation.

What is Web Scraping?

Web Scraping is the automatic version of surfing the web and collecting data. The internet is full of content and user-generated content (UGC), so you can scrape countless data points.

However, most of the valuable data is in these popular websites, which are being scraped daily are Google search results, eCommerce platforms like Amazon, Walmart, Shopify, Travel websites, hotels you get the deal. Most companies or individuals who perform web scraping are looking for data to improve their sales, search rankings, keyword analysis, price comparison, and so on.

What Is the Difference Between Web Crawling and Web Scraping?

Web scraping and web crawling are very similar terms, and the confusion between them is natural. The main difference between web scraping and web crawling revolves around the type of operation/activity that the user is doing.

Web crawling moves around a website and collects links, and optionally goes through those links and collects and aggregates data or additional links. It is called crawling because it works like a spider that crawls through a website; this is why crawlers are often called spiders by some developers.

Web Scraping on the other hand is task-oriented. It’s targeting a predefined link and retrieves the data from it and sends it to the database.

Usually, a data collection is built around a combination of those two approaches, which means getting the links to scrape with a web crawler/spider and then scraping the data from those pages with a scraper.

#web scraping #puppeteer #web crawling web scraping

Autumn  Blick

Autumn Blick

1603805749

What's the Link Between Web Automation and Web Proxies?

Web automation and web scraping are quite popular among people out there. That’s mainly because people tend to use web scraping and other similar automation technologies to grab information they want from the internet. The internet can be considered as one of the biggest sources of information. If we can use that wisely, we will be able to scrape lots of important facts. However, it is important for us to use appropriate methodologies to get the most out of web scraping. That’s where proxies come into play.

How Can Proxies Help You With Web Scraping?

When you are scraping the internet, you will have to go through lots of information available out there. Going through all the information is never an easy thing to do. You will have to deal with numerous struggles while you are going through the information available. Even if you can use tools to automate the task and overcome struggles, you will still have to invest a lot of time in it.

When you are using proxies, you will be able to crawl through multiple websites faster. This is a reliable method to go ahead with web crawling as well and there is no need to worry too much about the results that you are getting out of it.

Another great thing about proxies is that they will provide you with the chance to mimic that you are from different geographical locations around the world. While keeping that in mind, you will be able to proceed with using the proxy, where you can submit requests that are from different geographical regions. If you are keen to find geographically related information from the internet, you should be using this method. For example, numerous retailers and business owners tend to use this method in order to get a better understanding of local competition and the local customer base that they have.

If you want to try out the benefits that come along with web automation, you can use a free web proxy. You will be able to start experiencing all the amazing benefits that come along with it. Along with that, you will even receive the motivation to take your automation campaigns to the next level.

#automation #web #proxy #web-automation #web-scraping #using-proxies #website-scraping #website-scraping-tools

Luna  Hermann

Luna Hermann

1596201180

A Brief Introduction for Web Scrapping with Puppeteer

In my current job we are working with a bunch of information from the internet (for analytics purposes) and we always need to recover some specific data from a variety of websites.

One of my tasks at my job is to retrieve this data and transform it into a traditional format. When I worked on this I was thinking: that’s simple, I just need to find some resources like: web service or files and do an http request call and voila!.

I had always worked consuming http endpoints or downloading files. It’s the most common way to reach data nowadays. But I found some websites which don’t have any of these options. Something like this happened in my head:

So, I did some research into how to read the raw data from an html page and return the most important information. Finally, I found a nice Nodejs library to do it. That was Puppeteer.

What is Puppeteer?

Puppeteeris an open-source library for Nodejs that allows us to control Chrome or Chromium API with the web browser devtools.

puppeteer/puppeteer

Headless Chrome Node.js API. Contribute to puppeteer/puppeteer development by creating an account on GitHub.

github.com

#nodejs #google-chrome #web-scraping #puppeteer #web-scraping-tools

AutoScraper Introduction: Fast and Light Automatic Web Scraper for Python

In the last few years, web scraping has been one of my day to day and frequently needed tasks. I was wondering if I can make it smart and automatic to save lots of time. So I made AutoScraper!

The project code is available on Github.

This project is made for automatic web scraping to make scraping easy. It gets a url or the html content of a web page and a list of sample data which we want to scrape from that page. This data can be text, url or any html tag value of that page. It learns the scraping rules and returns the similar elements. Then you can use this learned object with new urls to get similar content or the exact same element of those new pages!

Installation

Install latest version from git repository using pip:

$ pip install git+https://github.com/alirezamika/autoscraper.git

How to use

Getting similar results

Say we want to fetch all related post titles in a stackoverflow page:

from autoscraper import AutoScraper

url = 'https://stackoverflow.com/questions/2081586/web-scraping-with-python'

## We can add one or multiple candidates here.
## You can also put urls here to retrieve urls.
wanted_list = ["How to call an external command?"]

scraper = AutoScraper()
result = scraper.build(url, wanted_list)
print(result)

#python #web-scraping #web-crawling #data-scraping #website-scraping #open-source #repositories-on-github #web-development

Sival Alethea

Sival Alethea

1624402800

Beautiful Soup Tutorial - Web Scraping in Python

The Beautiful Soup module is used for web scraping in Python. Learn how to use the Beautiful Soup and Requests modules in this tutorial. After watching, you will be able to start scraping the web on your own.
📺 The video in this post was made by freeCodeCamp.org
The origin of the article: https://www.youtube.com/watch?v=87Gx3U0BDlo&list=PLWKjhJtqVAbnqBxcdjVGgT3uVR10bzTEB&index=12
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#web scraping #python #beautiful soup #beautiful soup tutorial #web scraping in python #beautiful soup tutorial - web scraping in python