Reid  Rohan

Reid Rohan


6 Essential Web Scraping Frameworks with JavaScript

In today's post we will learn about 6 Essential Web Scraping Frameworks with JavaScript.

What is a Web Scraping?

Web scraping is the process of collecting structured web data in an automated fashion. It’s also called web data extraction. Some of the main use cases of web scraping include price monitoring, price intelligence, news monitoring, lead generation, and market research among many others.

In general, web data extraction is used by people and businesses who want to make use of the vast amount of publicly available web data to make smarter decisions.

If you’ve ever copied and pasted information from a website, you’ve performed the same function as any web scraper, only on a microscopic, manual scale. Unlike the mundane, mind-numbing process of manually extracting data, web scraping uses intelligent automation to retrieve hundreds, millions, or even billions of data points from the internet’s seemingly endless frontier.

Table of contents:

  • Webparsy - NodeJS lib and cli for scraping websites using Puppeteer and YAML.
  • Node-crawler - Web Crawler/Spider for NodeJS + server-side jQuery.
  • Node-simplecrawler - Flexible event driven crawler for node.
  • Crawlee - Node.js and TypeScript library that crawls with Cheerio, JSDOM, Playwright and Puppeteer while enhancing them with anti-blocking features, queue, storages and more.
  • - The next generation web scraping framework. 
  • Pjscrape - A web-scraping framework written in Javascript, using PhantomJS and jQuery.

1 - Webparsy: NodeJS lib and cli for scraping websites using Puppeteer and YAML.


You can use WebParsy either as cli from your terminal or as a NodeJS library.


Install webparsy:

$ npm i webparsy -g
$ webparsy example/_weather.yml --customFlag "custom flag value"

  "title": "Madrid, España Pronóstico del tiempo y condiciones meteorológicas - The Weather Channel |",
  "city": "Madrid, España",
  "temp": 18


const webparsy = require('webparsy')
const parsingResult = await webparsy.init({
  file: 'jobdefinition.yml'
  flags: { ... } // optional




One of yaml, file or string is required.

  • yaml: A yaml npm module instance of the scraping definition.
  • string: The YAML definition, as a plain string.
  • file: The path for the YAML file containing the scraping definition.

Additionally, you can pass a flags object property to input additional values to your scraping process.

View on Github

2 - Node-crawler: Web Crawler/Spider for NodeJS + server-side jQuery.


$ npm install crawler

Basic usage

const Crawler = require('crawler');

const c = new Crawler({
    maxConnections: 10,
    // This will be called for each crawled page
    callback: (error, res, done) => {
        if (error) {
        } else {
            const $ = res.$;
            // $ is Cheerio by default
            //a lean implementation of core jQuery designed specifically for the server

// Queue just one URL, with default callback

// Queue a list of URLs

// Queue URLs with custom callbacks & parameters
    uri: '',
    jQuery: false,

    // The global callback won't be called
    callback: (error, res, done) => {
        if (error) {
        } else {
            console.log('Grabbed', res.body.length, 'bytes');

// Queue some HTML code directly without grabbing (mostly for tests)
    html: '<p>This is a <strong>test</strong></p>'

Slow down

Use rateLimit to slow down when you are visiting web sites.

const Crawler = require('crawler');

const c = new Crawler({
    rateLimit: 1000, // `maxConnections` will be forced to 1
    callback: (err, res, done) => {

c.queue(tasks);//between two tasks, minimum time gap is 1000 (ms)

View on Github

3 - Node-simplecrawler: Flexible event driven crawler for node.


npm install --save simplecrawler

Getting Started

Initializing simplecrawler is a simple process. First, you require the module and instantiate it with a single argument. You then configure the properties you like (eg. the request interval), register a few event listeners, and call the start method. Let's walk through the process!

After requiring the crawler, we create a new instance of it. We supply the constructor with a URL that indicates which domain to crawl and which resource to fetch first.

var Crawler = require("simplecrawler");

var crawler = new Crawler("");

You can initialize the crawler with or without the new operator. Being able to skip it comes in handy when you want to chain API calls.

var crawler = Crawler("")
    .on("fetchcomplete", function () {
        console.log("Fetched a resource!")

By default, the crawler will only fetch resources on the same domain as that in the URL passed to the constructor. But this can be changed through the crawler.domainWhitelist property.

Now, let's configure some more things before we start crawling. Of course, you're probably wanting to ensure you don't take down your web server. Decrease the concurrency from five simultaneous requests - and increase the request interval from the default 250 ms like this:

crawler.interval = 10000; // Ten seconds
crawler.maxConcurrency = 3;

You can also define a max depth for links to fetch:

crawler.maxDepth = 1; // Only first page is fetched (with linked CSS & images)
// Or:
crawler.maxDepth = 2; // First page and discovered links from it are fetched
// Or:
crawler.maxDepth = 3; // Etc.

View on Github

4 - Crawlee: Node.js and TypeScript library that crawls with Cheerio, JSDOM, Playwright and Puppeteer while enhancing them with anti-blocking features, queue, storages and more.


We recommend visiting the Introduction tutorial in Crawlee documentation for more information.

Crawlee requires Node.js 16 or higher.

With Crawlee CLI

The fastest way to try Crawlee out is to use the Crawlee CLI and choose the Getting started example. The CLI will install all the necessary dependencies and add boilerplate code for you to play with.

npx crawlee create my-crawler
cd my-crawler
npm start

Manual installation

If you prefer adding Crawlee into your own project, try the example below. Because it uses PlaywrightCrawler we also need to install Playwright. It's not bundled with Crawlee to reduce install size.

npm install crawlee playwright
import { PlaywrightCrawler, Dataset } from 'crawlee';

// PlaywrightCrawler crawls the web using a headless
// browser controlled by the Playwright library.
const crawler = new PlaywrightCrawler({
    // Use the requestHandler to process each of the crawled pages.
    async requestHandler({ request, page, enqueueLinks, log }) {
        const title = await page.title();`Title of ${request.loadedUrl} is '${title}'`);

        // Save results as JSON to ./storage/datasets/default
        await Dataset.pushData({ title, url: request.loadedUrl });

        // Extract links from the current page
        // and add them to the crawling queue.
        await enqueueLinks();
    // Uncomment this option to see the browser window.
    // headless: false,

// Add first URL to the queue and start the crawl.

By default, Crawlee stores data to ./storage in the current working directory. You can override this directory via Crawlee configuration. For details, see Configuration guide, Request storage and Result storage.

View on Github

5 - The next generation web scraping framework. 

Ayakashi helps you build scraping and automation systems that are

  • easy to build
  • simple or sophisticated
  • highly performant
  • maintainable and built for change

Powerful querying and data models

Ayakashi's way of finding things in the page and using them is done with props and domQL.
Directly inspired by the relational database world (and SQL), domQL makes DOM access easy and readable no matter how obscure the page's structure is.
Props are the way to package domQL expressions as re-usable structures which can then be passed around to actions or to be used as models for data extraction.

High level builtin actions

Ready made actions so you can focus on what matters.
Easily handle infinite scrolling, single page navigation, events and more.
Plus, you can always build your own actions, either from scratch or by composing other actions.

Preload code on pages

Need to include a bunch of code, a library you made or a 3rd party module and make it available on a page?
Preloaders have you covered.

Control how you save your data

Automatically save your extracted data to all major SQL engines, JSON and CSV.
Need something more exotic or the ability to control exactly how the data is persisted?
Package and plug your custom logic as a script.

View on Github

6 - Pjscrape: A web-scraping framework written in Javascript, using PhantomJS and jQuery.


pjscrape is a framework for anyone who's ever wanted a command-line tool for web scraping using Javascript and jQuery. Built for PhantomJS, it allows you to scrape pages in a fully rendered, Javascript-enabled context from the command line, no browser required.


  • Client-side, Javascript-based scraping environment with full access to jQuery functions
  • Easy, flexible syntax for setting up one or more scrapers
  • Recursive/crawl scraping
  • Delay scrape until a "ready" condition occurs
  • Load your own scripts on the page before scraping
  • Modular architecture for logging and writing/formatting scraped items
  • Client-side utilities for common tasks
  • Growing set of unit tests

View on Github

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Related videos:

Introduction To Web Scraping With Javascript

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6 Essential Web Scraping Frameworks with JavaScript

Top 15 Free JavaScript Frameworks for Web Applications

List of some useful JavaScript Frameworks and libraries for website, web apps, and mobile apps development, that developers should know about to make selection easier.
This article will help you understand the various types of JavaScript Framework available in the market. When it comes to choosing the best platform for you, it’s not only the number of features you need to consider but also its functionality. The ease with which it fits within your project is also an essential factor. The next step is to choose the framework that best fits your company requirements or you can select the best from the list of top web development companies to develop your product based on your requirements.

#javascript frameworks for web applications #web applications development companies #progressive javascript framework #javascript frameworks #javascript #frameworks

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10 Top Web Development Frameworks for Assured Success of Your Project - PixelCrayons

Web development frameworks are a powerful answer for businesses to accomplish a unique web app as they play a vital role in providing tools and libraries for developers to use.

Most businesses strive to seek offbeat web applications that can perform better and enhance traffic to the site. Plus, it is imperative to have such apps as the competition is very high in the digital world.

Developers find it sophisticated to use the libraries and templates provided by frameworks to make interactive and user-friendly web applications. Moreover, frameworks assist them in increasing the efficiency, performance, and productivity of the web development task.

Before getting deep into it, let’s have a quick glance at the below facts and figures below that will help you comprehend the utility of the frameworks.

As per Statista, 35.9% of developers used React in 2020.
25.1% of developers used the Angular framework worldwide.
According to SimilarTech, 2,935 websites use the Spring framework, most popular among the News and Media domain.

What is a Framework?
A framework is a set of tools that paves the way for web developers to create rich and interactive web apps. It comprises libraries, templates, and specific software tools. Additionally, it enables them to develop a hassle-free application by not rewriting the same code to build the application.

There are two categories of frameworks: the back-end framework, known as the server-side, and the front-end framework, known as the client-side.

The backend framework refers to a web page portion that you can not see, and it communicates with the front end one. On the other hand, the front-end is a part of the web that users can see and experience.

You can understand by an example that what you see on the app is the front-end part, and the communication you make with it is the part of the back end.

Read the full blog here

Hence, depending on your web development application requirements, you can hire web developers from India’s best web development company. In no time, you will be amongst those who are reaping the results of using web development frameworks for the applications.

#web-development-frameworks #web-frameworks #top-web-frameworks #best-web-development-frameworks

Ajay Kapoor


JS Development Company India | JavaScript Development Services

PixelCrayons: Our JavaScript web development service offers you a feature-packed & dynamic web application that effectively caters to your business challenges and provide you the best RoI. Our JavaScript web development company works on all major frameworks & libraries like Angular, React, Nodejs, Vue.js, to name a few.

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Looking for professional JavaScript web app development services? We provide custom JavaScript development services applying latest version frameworks and libraries to propel businesses to the next level. Our well-defined and manageable JS development processes are balanced between cost, time and quality along with clear communication.

Our JavaScript development companies offers you strict NDA, 100% money back guarantee and agile/DevOps approach.

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Any Alpha

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Top 3 Golang Web Frameworks In 2021

Golang is one of the most powerful and famous tools used to write APIs and web frameworks. Google’s ‘Go’ otherwise known as Golan orders speedy running local code. It is amazing to run a few programming advancements rethinking specialists and software engineers from various sections. We can undoubtedly say that this is on the grounds that the engineers have thought that it was easiest to utilize Go. It is always considered as ago for web and mobile app development because it is ranked highest among all the web programming languages.

Top 3 Golang web frameworks in 2021:

1.Martini: Martini is said to be a low-profile framework as it’s a small community but also known for its various unique things like injecting various data sets or working on handlers of different types. It is very active and there are some twenty and above plug-ins which could also be the reason for the need for add-ons. It deals with some principles of techniques like routing, dealing, etc, basic common tricks to do middleware.

2.Buffalo: Buffalo is known for its fast application development services. It is a complete process of starting any project from scratch and providing end to end facility for back-end web building. Buffalo comes with the dev command which helps directly to experience transformations in front of you and redevelop your whole binary. It is rather an ecosystem used to create the best app development.

3.Gorilla: Gorilla is the largest and longest-running Go web framework. It can be little and maximum for any user. It is also the biggest English-speaking community that comes with robust web sockets features so you can attach the REST codes to the endpoints giving a third-party service like Pusher.

So, these are some web frameworks that can be used for Golang language. Each framework has its unique points which are only found in them but all of them are the best. IF your developer is in search of one this is where you can find the best.

#top 3 golang web frameworks in 2021 #golang #framework #web-service #web #web-development

Abigale  Yundt

Abigale Yundt


What Will Be The Best JavaScript Frameworks in 2021? -

Someone who is beginning their work journey as a developer or software engineer might encounter an issue while selecting which language, framework, or tools they should be trained in or must have knowledge about. A lot of individuals had to go through such a scenario. Since there is a large range of languages and frameworks available in the software development community, there is not a single solution or option. Hence, we have created this list to narrow down your option. In this post, we will talk about various _ JavaScript Frameworks_ that we feel will be the most useful in 2021.

When we are talking about the development of websites, the JavaScript framework comes in the mind quickly for companies and programmers in today’s world. You most likely had a chance to work on one or two of the JavaScript Frameworks that we have mentioned on the list. Go on and learn more about these JavaScript Frameworks.

1. ReactJS

React is the most prominent JS framework since it was launched by Facebook in 2003. The potential to utilize it for native development comes amongst the key benefits of React. A broad community, Facebook support, saturated environments, improved efficiency, and reusable components are the key reasons behind React’s success. React is ideally suited for building SPA or cross-platform applications and designing small business applications.


#javascript #frameworks #javascript #javascript frameworks #mobile application