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Website Crawler Tutorials

Whether you are looking to obtain data from a website, track changes on the internet, or use a website API, website crawlers are a great way to get the data you need. While they have many components, crawlers fundamentally use a simple process: download the raw data, process and extract it, and, if desired, store the data in a file or database. There are many ways to do this, and many languages you can build your spider or crawler in.

There are many libraries and add-ons that can make building a crawler easier. From building the HTML document object model (DOM) for easy traversal in order to make extracting content easier (Cheerio), to supporting the use of javascript-based queries to easily facilitate the use of browsers to control the crawlers (Node.js), building a web crawler doesn't have to be hard.

These tutorials are arranged by subject and language/technology/libraries used. To view more tutorials for a particular area, just click the title or the link at the end. This will take you to a fuller list of available tutorials.

Python Web Crawler Tutorials

How to make a Web Crawler in under 50 lines of Python code

How to make a Web Crawler in under 50 lines of Python code

This is a tutorial made by Stephen from Net Instructions on how to make a web crawler using Python.

A Basic 12 Line Website Crawler in Python

A Basic 12 Line Website Crawler in Python

This is a tutorial made by Mr Falkreath about creating a basic website crawler in Python using 12 lines of Python code. This includes explanations of the logic behind the crawler and how to create the Python code.

Crawl a website with scrapy

Crawl a website with scrapy

This tutorial about building a website crawler using Python and the Scrapy library, Pymongo, and pipelines.ps. It includes URL patterns, codes for building the spider, and instructions for extracting and releasing the data stored in MongoDB.

Scraping Web Pages with Scrapy - Michael Herman

Scraping Web Pages with Scrapy - Michael Herman

This is a tutorial posted by Michael Herman about crawling web pages with Scrapy using Python using the Scrapy library. This include code for the central item class, the spider code that performs the downloading, and about storing the data once is obtained.

Read more Python Website Crawler Tutorials.

PHP Web Crawler Tutorials

How To Create A Simple Web Crawler in PHP

How To Create A Simple Web Crawler in PHP

This tutorial covers how to create a simple web crawler using PHP to download and extract from HTML. It was written by Subin Siby. This also includes a demo about the process and uses the Simple HTML DOM class for easier page processing.

How To Build A Basic Web Crawler To Pull Information From A Website (Part 1)

How To Build A Basic Web Crawler To Pull Information From A Website (Part 1)

This is a tutorial written by James Bruce on how to build a basic web crawler in order to pull information from a website using HTML and PHP languages. This includes code on how to extract all of the links from a given webpage.

How to Create a Web Spy with a PHP Crawler

How to Create a Web Spy with a PHP Crawler

This is a tutorial made by 1st Web Designer on how to create a web crawler in PHP in 5 steps. The tutorial explains how to create a MySQL database, how to obtain data, and how to save it.

PHPCrawl webcrawler library for PHP - Example script

PHPCrawl webcrawler library for PHP - Example script

This is a tutorial published on the PHPCrawl website about building a crawler in PHP using the PHPCrawl library. This provides a brief explanation and a sample script to demonstrate how to implement the library.

Read more PHP Website Crawler Tutorials.

Java Web Crawler Tutorials

How to Write a Web Crawler in Java

How to Write a Web Crawler in Java

This is a tutorial written by Viral Patel on how to develop a website crawler using Java.

How to make a Web Crawler using Java

How to make a Web Crawler using Java

This is a tutorial made by Program Creek on how to make a prototype web crawler using Java. This guide covers setting up the MySQL database, creating the database and the table, and provides sample code for building a simple web crawler.

Grandiloquent Musings: My solution to the Go Tutorial Web Crawler

Grandiloquent Musings: My solution to the Go Tutorial Web Crawler

This is a tutorial posted by Kim Mason on creating a parallelized web crawler using Java that only fetches urls once without duplicate downloading. This tutorial starts from an original script and modifies it to implement parallelization.

How to create a Web Crawler and storing data using Java - MrBool

How to create a Web Crawler and storing data using Java - MrBool

This is a tutorial made by Anurag Jain on how to create a web crawler and how to efficiently store data using Java. This includes explanation for setting up the database, creating a front-end page interface for usability, describes the functionality performed, and explains the database system in relation to the final crawler.

Read more Java Website Crawler Tutorials.

Node.js Web Crawler Tutorials

Node.js is a JavaScript engine that runs on a server to provide information in a traditional AJAX-like manner, as well as to do stand-alone processing. Node.js is designed to be able to scale across multiple cores, and to be quick and efficient, using a single core per server and using event handlers to run everything, reducing operating system overhead with multiple processes.

Use Node.js to Extract Data from the Web for Fun and Profit

Use Node.js to Extract Data from the Web for Fun and Profit

This is a tutorial posted by John Robinson in using node.js to extract website data using node.js the Cheerio library.

A Quick Introduction to Node-Wit Modules For Node.js

A Quick Introduction to Node-Wit Modules For Node.js

This is a tutorial made by Wit Ai on how to use the Node-Wit module for Node.js server application. This covers steps on how to create a Node.js app, adding and installing dependencies, sending audio, creating an index.js file, and starting the app.

simplecrawler

simplecrawler

This is the official documentation and tutorial for the simplecrawler library. The library is designed to provide a simple API for creating crawlers with Node.js. It include codes for both simple and advanced modes, as well as providing a list of configuration options.

Scraping the Web With Node.js

Scraping the Web With Node.js

This is a tutorial made by Adnan Kukic about using Node.js and jQuery to build a website crawler. This include codes for the set up, traversing the HTML DOM to find the desired content, and instructions on formatting and extracting data from the downloaded website.

Read more Node.js Website Crawler Tutorials.

Scrapy Web Crawler Tutorials

Scraping Web Pages with Scrapy - Michael Herman

Scraping Web Pages with Scrapy - Michael Herman

This is a tutorial posted by Michael Herman about crawling web pages with Scrapy using Python using the Scrapy library. This include code for the central item class, the spider code that performs the downloading, and about storing the data once is obtained.

Scrapy Tutorial —  Scrapy 0.24.5 documentation

Scrapy Tutorial — Scrapy 0.24.5 documentation

This is an official tutorial for building a web crawler using the Scrapy library, written in Python. The tutorial walks through the tasks of: creating a project, defining the item for the class holding the Scrapy object, and writing a spider including downloading pages, extracting information, and storing it.

Build a Python Web Crawler with Scrapy - DevX

Build a Python Web Crawler with Scrapy - DevX

This is a tutorial made by Alessandro Zanni on how to build a Python-based web crawler using the Scrapy library. This includes describing the tools that are needed, the installation process for python, and scraper code, and the testing portion.

Web Scraping with Scrapy and MongoDB - Real Python

Web Scraping with Scrapy and MongoDB - Real Python

This is a tutorial published on Real Python about building a web crawler using Python, Scrapy, and MongoDB. This provides instruction on installing the Scrapy library and PyMongo for use with the MongoDB database; creating the spider; extracting the data; and storing the data in the MongoDB database.

Read more Scrapy Website Crawler Tutorials.

Cheerio Web Crawler Tutorials

Use Node.js to Extract Data from the Web for Fun and Profit

Use Node.js to Extract Data from the Web for Fun and Profit

This is a tutorial posted by John Robinson in using node.js to extract website data using node.js the Cheerio library.

How To Use node.js, request and cheerio to Set Up Simple Web Scraping

How To Use node.js, request and cheerio to Set Up Simple Web Scraping

This is a tutorial on how to use node.js, jQuery, and Cheerio to set up simple web crawler. This include instructions for installing the required modules and code for extracting desired content from the HTML DOM, calculated using Cheerio.

Create a simple web spider in node.js

Create a simple web spider in node.js

This is a tutorial made by Licson Lee about creating a simple web spider in Node.js using the Cheerio, request, and async libraries. It provides sample codes, both for creating the database and the crawler, and gives a quick explanation of how the system works.

Easy Web Scraping With Node.js - miguelgrinberg.com

Easy Web Scraping With Node.js - miguelgrinberg.com

This is a tutorial posted by Miguel Grinberg about building a web scraper using Node.js and Cheerio. This provides instruction and sample code for downloading webpages using the request module in Node.js, and finding desired content using Cheerio with a calculated HTML DOM.

Read more Cheerio Website Crawler Tutorials.

Nutch Web Crawler Tutorials

How To Create a Web Crawler and Data Miner

How To Create a Web Crawler and Data Miner

This is a tutorial on how to create a web crawler and data miner using Apache Nutch. It includes instructions for configuring the library, for building the crawler, and for starting the crawling process.

Nutch Web Crawler Tutorial

Nutch Web Crawler Tutorial

This is the primary tutorial for the Nutch project, written in Java for Apache. This covers the concepts for using Nutch, and codes for configuring the library. The tutorial integrates Nutch with Apache Sol for text extraction and processing.

Read more Nutch Website Crawler Tutorials.

MongoDB Web Crawler Tutorials

Handling AJAX calls with Node.js and Express

Handling AJAX calls with Node.js and Express

This is a tutorial posted by Michael Herman about performing AJAX calls with Node.js and the Express library. It shows how to create both the server-side and client-side scripts, and shows how to store the data in MongoDB.

Web crawler, captured by NodeJs RSS news

Web crawler, captured by NodeJs RSS news

This is a tutorial about building a web crawler to download and parse RSS feeds with a Node.js backend. This include steps for creating a new Node.js project, downloading the page with the request function, and storing the data in a MongoDB database.

Web Scraping with Scrapy and MongoDB - Real Python

Web Scraping with Scrapy and MongoDB - Real Python

This is a tutorial published on Real Python about building a web crawler using Python, Scrapy, and MongoDB. This provides instruction on installing the Scrapy library and PyMongo for use with the MongoDB database; creating the spider; extracting the data; and storing the data in the MongoDB database.

Read more MongoDB Website Crawler Tutorials.

PhantomJS Web Crawler Tutorials

Web scraping with Node.js Matt's Hacking Blog

Web scraping with Node.js Matt's Hacking Blog

This is a tutorial made by Matt Hacklings about web scraping and building a crawler using JavaScript, Phantom.js, Node.js, Ajax. This include codes for creating a JavaScript crawler function and the implementation of limits on the maximum number of concurrent browser sessions performing the downloading.

Getting started with Selenium Webdriver for node.js

Getting started with Selenium Webdriver for node.js

This is a tutorial made by Max Edmands about using the selenium-webdriver library with node.js and phantom.js to build a website crawler. It includes steps for setting up the run environment, building the driver, visiting the page, verification of the page, querying the HTML DOM to obtain the desired content, and interacting with the page once the HTML has been downloaded and parsed.

Crawl you website including login form with Phantomjs - Adaltas

Crawl you website including login form with Phantomjs - Adaltas

This is a tutorial made by Adaltas about crawling a website requiring a login form using jQuery-based JavaScript, Phantom.js to run the JavaScript, and Node.js for the server-side. It breaks the requirements for the crawler into multiple scripts, performing actions such as the: login action, function action, the action runner, and the pilot to control the system.

Read more PhantomJS Website Crawler Tutorials.

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Website Crawlers

Looking to download a lot of data? Need to find the exact information in a gigantic internet haystack that you are looking for? These resources are designed to help you build spiders, crawlers, and other tools to obtain data from the internet.

Website Crawler Tutorials

Build website spiders and crawlers using: Python | PHP | Java | Node.js | Scrapy | Cheerio | Apache Nutch | MongoDB | PhantomJS.

Website Tools

These tools are designed to help you build your website, add content, and improve your website's appearance.

Javascript Graphing Libraries

Add charts & graphs to your website using: Chart.js | Chartist.js | DC.js | Morris.js | Timeline.js | Vivagraph.js

Node.js Tutorials

How to install, program for, and implement Node.js for scalable and easy server-side Javascript for quick AJAX-style processing.

Parallax Website Design Techniques

Create websites with parallax scrolling using: jQuery.js | Stellar.js | Skrollr.js | CSS

Reveal.js

Infininite Scrolling Web Design

Build an endless scrolling website, loading new content when your visitors reach the end of your webpage.

Infinite Scroll Tutorials

Tutorials about how to build an infinite scrolling website, including: WordPress, Drupal, Blogger, jQuery, Jetpack, Masonry, Isotope, and the Infinite-Scroll plugin for WordPress.

Infinite Scroll, Card Design Tutorial

How to build an infinite scrolling website with card design using Masonry, AJAX, JavaScript, PHP, and MySQL.

Parallax Web Design

Parallax website design moves one part of your website at a different speed than the rest of your page. This often creates a 3D-like effect, adding depth and interest to your webpage design. The resources, including themes, tutorials, and examples, are designed to help you build a website with parallax scrolling.

Parallax Web Design Resources

Parallax Technologies

Tools to create parallax scrolling websites: jQuery, Skrollr.js, Stellar.js, CSS

Parallax Tutorials

A Simple Parallax Scrolling Tutorial about how parallax scrolling works.

Tutorials for creating parallax websites using: jQuery | Stellar.js | Skrollr.js | CSS

Website Theme Resources

Website themes are an easy to create a great website quickly. They provide a beginning point for you to build your websites, giving you layout, code, and functionality to work with. These resources are made to help you find the right theme to help you start building your website.

Website Theme Research

Our comprehensive, analytical research into the website theme industry, focusing on trends and major changes affecting website designers and website theme customers.

Theme Forest Analysis Report

Our Fall, 2014 Theme Forest Analysis Report shows a major shift in the theme marketplace. The empirical assesment of Theme Forest over a 28 month period indicates a series of interesting trends and patterns.

Analysis of Parallax Scrolling in Website Themes

Our assement of the popularity of parallax scrolling in website themes published on Theme Forest shows that parallax design elements are an increasingly popular trend.

Wordpress Themes

Top Ranked WordPress Themes

The best WordPress themes for a new website, as calculated by our WordPress Theme Search Engine. These themes are selected for reliability, quality, popularity, and many other factors.

Parallax Wordpress Themes

Top Ranked Parallax WordPress Themes: the best WordPress themes for creating websites with parallax scrolling, as ranked by our WordPress Theme Search Engine

10 Parallax WordPress Themes

10 Parallax WooCommerce Wordpress Themes

Amazing Wordpress Themes with WooCommerce and Parallax Scrolling

7 Amazing Parallax Wordpress Themes

5 Wonderful Parallax Wordpress Themes

eCommerce Wordpress Themes

Top Ranked eCommerce WordPress Themes: the best WordPress themes for creating eCommerce websites, as ranked by our WordPress Theme Search Engine

10 Parallax WooCommerce Wordpress Themes

5 Great eCommerce Website Themes, Built For WordPress

6 Amazing Wordpress eCommerce Themes

5 Professional eCommerce Themes for Selling on Your Website

10 Great eCommerce WordPress Themes with WooCommerce

Finding WordPress & Drupal GPL Themes

How to find WordPress and Drupal themes licensed under the GNU Public License. These themes offer increased freedom and the ability to use your theme on multiple sites.

Drupal Themes

These themes are built for use with the Drupal content management system. Drupal is wonderful and quite popular for business websites.

Parallax Drupal Themes

Themes for creating parallax-scrolling 3D-depth-like effects and animations as visitors scroll down a page.

6 Parallax Drupal Themes

6 Professional Parallax Drupal Themes

Portfolio Drupal Themes

Themes built for making professionally designed portfolios.

5 Professional Drupal Portfolio Themes

5 Amazing Drupal Portfolio Themes

Corporate Drupal Themes

Themes built for making small, medium, and large business websites.

6 Corporate Drupal Themes

7 Professional Drupal Corporate Themes