Daniel
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October 26, 2019
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Best Web Scraping Extensions for Google Chrome and Mozilla Firefox web browsers

In this tutorial, we will show you some of the best web scraping extensions for popular web browsers i.e. Google Chrome and Mozilla Firefox.

Web scraper works by using a web crawler, also known as a ‘bot,’ a web spider, or a web crawler to search for contents from given websites by following URL links. If a website contains the needed information, the web scraper harvests the data from the website.

Several data collected by web scrapers, includes email addresses, phone numbers, texts, videos, images, prices of products, etc.

Meanwhile, Web scrapers are used for:

  • For collecting personal information like addresses, emails, and social media account details, etc. for advert related purposes, political campaigns, or for spamming.
  • To monitor the prices of competing goods, revenue optimization, product trends, etc.
  • To gather relevant data for decision making and brand compliance
  • Extract data valuable for financial purposes
  • To gather data for market research and analysis

How does a web scraper work?

  • A web scraper is used to target and collect information from a given website
  • The extracted information is retrieved from the web scraper in HTML format
  • The collected data is parsed to extract the needed data
  • The extracted data is stored in specified formats. E.g., CSV, TSV, Excel, or JSON for further processing.

Best Web Scraper Extensions for Google Chrome

Web scraper extensions are ideal for scraping or extracting data from small websites and other less complicated sources.

There are several web scraping extensions for Google Chrome but will be focusing our attention on the best web scraper extensions for Google Chrome.

1 .Web Scraper
The Web Scraper is a free web scraping extension on Google Chrome. With the web scraper, you can create a sitemap to determine the type of data you can collect from a website and the best way of scraping such data from the website. You can also use the sitemap to navigate the site and export the scraped data in CSV format.

Features of Web Scraper

  • The Web Scraper can scrape data from sites with several navigation levels and also store scraped data locally
  • The Web Scraper can even scrap multiple data types simultaneously
  • Web Scraper has an extraction feature that extracts data from dynamic pages built with JavaScript and Ajax, and are less accessible to other data scrapers.
  • Web Scraper has a modular selector system you can use to create sitemaps from different selectors. This makes it possible to extract data from websites with different structures.
  • You can also browse scraped data with Web Scraper and export the data in CSV format
  • Web Scraper has a feature that enables you to import and export sitemaps.

Download the Web Scraper extension from Google Chrome Store or the official website

2 .Data Scraper – Easy Web Scraping

Data Scraper is a web scraping tool you can use to extract data from HTML webpages. Data Scraper extracts data in table and list formats and exports the data in XLS, Google Sheets, CSV, or TSV format.

Data Scraper is available as a free version and also as paid version.

The free version allows you to scrape 500 pages monthly. The paid version has additional features like API, anonymous IP proxies, scraping data automatically from paginated websites with a single click, etc.

Features of Data Scraper

  • Data Scraper ensures the safety of data by using HTTPS encryption to protect users’ privacy and security
  • Data scraper has more than 50,000 extraction queries. You can use any of these queries to mine and export data in CSV format with a single click
  • Use Custom scraping to extract data from any website
  • You can run automated data scraping from a list of URLs using Data Scraper
  • You can combine Data Scraper with SEO tool, CRM recruiter systems to scrape and convert data easily for various purposes like email campaigns, recruitment screening, etc.
  • Data miners can extract a wide array of data ranging from emails, social media IDs to price and product information.

Download Data Scraper extension from Google Chrome store

3 .Listly – Web Scraper

Listly is a web Scraper tool for extracting and storing data in XLS format. With a single Click, Listly extracts and parse and arrange the data into rows and columns.

Features of Listly

  • You can schedule daily extraction on Listly
  • You get an email notification from Listly
  • Listly has a multiple extraction feature that allows you to extract and store multiple pages in XLS format
  • You can load more data on Listly by ‘Repeat Click’ and also ‘Repeat Scroll to load more data
  • Anonymous IP address to mask your IP address
  • Listly detects the iFrame link and also extracts Hyperlinks over the content.

Download Listly web scraper extension for Google Chrome here

4 .Grepsr – Web Scraping Tool

The Grepsr is a web scraping tool for efficiently mining and converting data to spreadsheets using the intuitive point and click toolkit.

To use Grepsr web scraping extension, download and install Grepsr for Chrome from the Google Chrome store. After installation, you can automate Grepsr to look for particular data types.

Features of Grepsr

  • Use Grepsr on your web browser to extract data by using Grepsr’s intuitive tagging toolkit to point and click on the data element you want to extract.
  • With Grepsr, you can scrap and save data in any format of choice by clicking on the ‘Download’ icon and selecting your download format
  • Use Grepsr built-in integration to export data to Dropbox, Google Sheets, Box, Amazon S3 and other document management systems
  • Automate your data scraping activity by scheduling Grepsr to scrape data only at scheduled days, or period using the calendar schedule feature to mine new data
  • Grepsr use workflow tools, built-in support, and API to manage your daily data mining activities.
  • Grepsr has a simple user interface with a project form to submit your data scraping queries.

5 .Agenty – Advanced Web Scraper

Agenty is a screen web scraper for scraping data from various types of sources and websites like password-protected websites, public websites, XML sitemaps, JSON APIs, RSS Feeds, etc. 

Features of Agenty

  • Agenty uses point-and-click CSS selectors to mine, preview, and export data to JSON, CSV, or TSV format.
  • Agenty creates a free web scraper agent for its cloud platform or for Data Studio, which is a windows desktop app.
  • Agenty uses automatic IP rotation and anonymous proxies to extract data from any website like real human browsing from a specific location.
  • You can use Agenty’s ‘Batch URL Crawling’ feature to mine data from multiple pages using a single agent. All you need do is input a URL in an agent’s input or upload a URL list for automatic data extraction.
  • Agenty is equipped to scrape data from websites with login details, complex pagination, AJAX-based sites, etc.
  • Enjoy unlimited support from Agenty.

Download the Agenty web scraper from the Google Chrome store to enjoy its unlimited features.

Best Web Scraper Extensions for Mozilla Firefox

Mozilla Firefox is a much older but reliable web browser loved by many for its speed, stability, and security. Mozilla Firefox supports a vast array of extensions or add-ons. Notable among these add-ons are web scraper tools.

Mozilla Firefox is known to support a vast array of web scraper tools. But we will be focusing on the best of web scraper extensions that work well for Mozilla Firefox.

1 .Web Scraper

The Web Scraper is a free web scraping extension on Mozilla Firefox. With the web scraper, you can create a sitemap to determine the type of data you can collect from a website and the best way of scraping such data from the website. You can also use the sitemap to navigate the site and export the scraped data in CSV format.
The web scraper is built with a modular selector engine and can be set up using several types of selectors to adapt Web Scraper to a particular site.

Features of Web Scraper

  • The Web Scraper can scrape data from sites with several navigation levels and also store scraped data locally
  • The Web Scraper can even scrap multiple data types simultaneously
  • Web Scraper has an extraction feature. This extracts data from dynamic pages built with JavaScript and Ajax.
  • Web Scraper has a modular selector system you can use to create sitemaps from different selectors. This makes it possible to extract data from websites with different structures.
  • You can also browse scraped data with Web Scraper and export the data in CSV format
  • Web Scraper has a feature that enables you to import and export sitemaps.

Functions of modular selector engine

  • Use link selectors to browse websites for data extraction.
  • Use the element selectors to extract multiple data types from a single webpage.
  • It utilizes text, element Attribute, Image, and Table Selectors to extract data from websites
  • Use the scroll down selectors and Element click to load additional data for extraction

Permission

Web Scraper tool will require your permission to access the following on your PC

  • Data from all websites
  • Browsing history, cookies, etc.
  • Download files to your PC
  • Notify you
  • Control your PC proxy settings
  • Access opened browser tabs

Add the Web Scraper extension to your Mozilla Firefox to enjoy its amazing features.

2 .Data scraper by Rajkot

The Data Scraper from Rajkot is a web scraper extension for extracting data from various tables to a single file. Data Scraper uses the jquery selector for configuring import and export tools for optimized performance.

Rajkot DataScraper needs your permission to:

  • Access data from websites
  • Access your browser tabs

Download DataScraper from Mozilla Firefox

Limitations of Web Scrapers

  • Data storage

Scraping a large volume of data from several websites (about 100-200) a day presents you with the challenges of warehousing your data. For a large quantity of data mining, you need a scalable and secure data storage infrastructure.

Amazon Web services and Relational Database Services are excellent options you can look to for a solution to your data warehousing challenges.

  • Modern anti-scraping Technologies

Some websites like LinkedIn uses anti-scraping technologies to block a web scraper with the same IP address sending consistent requests to its server.

Overcoming this challenge requires that you use a rotating proxy service to mask your IP address and also improve scraping speed.

By opting for any of ProxyRack’s subscription plans, you will be provided with access to more than 2 million proxies monthly.

Every connection you make using Rotating Proxy get you assigned to a new and unique proxy IP address. The assigned IP address bypasses anti-scraping technologies that may be present on a website.

ProxyRack Proxies Packages

1 .The Residential Rotating Proxies

For $80 monthly subscription, ProxyRack’s residential rotating proxies gives you access to more than 1,250,000 unique proxies monthly

Benefits of subscribing to the Residential Rotating Proxies

  • Medium speeds
  • HTTPS & SOCKS Protocols
  • Ideal for use with data scraper
  • Ideal for scaling data extraction.

2 .USA Rotating Proxies

The US Rotating Proxies are Proxies from US data centers. These proxy servers have high speed and reliability.

Features you enjoy when you subscribe to the USA Rotating Proxies plan for $120 monthly

  • Fast connection speeds with high reliability
  • Connects using the HTTP and HTTPS protocols
  • Great for web browsing and data mining

3 .Mixed Rotating Proxies

Mixed Rotating Proxies uses proxies from data centers spread around the world. These proxies are noted for their high speed and reliability. 

Subscription to Mixed Rotating Proxies costs $120 monthly with the following benefits

  • Fast connection speeds with high reliability
  • Connects using the HTTP and HTTPS protocols
  • Great for web browsing and data mining

Combining your data scraper tool with proxies offers you three advantages:

  • Proxy server masks your IP address each time you make a connection to a particular website
  • You’re able to get past the rate limits of websites.
  • Overcome geo-restriction barriers of some websites.

Conclusion

Data scraper extensions are great tools for mining data, converting, and storing data in chosen formats. However, using Data Scrapers tools has its limitation, the greatest of which is the anti-scraping technologies and rate limits of websites.

ProxyRack is one of the best proxy services you can use to overcome these challenging obstacles to data mining.

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