9 Best Free Web Crawlers for Beginners

Web crawling, also known as web scraping, data harvesting, or data extraction, is the process of collecting information from websites automatically using software tools called web crawlers or scrapers. Web crawling allows you to quickly gather large amounts of data from the internet that would be impractical to copy and paste manually.

There are many potential applications for web crawling, such as:

• Building databases of contact information
• Collecting product details and prices for market research
• Analyzing customer reviews and opinions
• Monitoring news, blogs, and social media

While web crawling used to require programming skills, there are now many automated tools that make it accessible for non-coders. As a beginner looking to get started with web scraping, using a free crawler is an ideal way to test it out without committing to an expensive tool.

However, not all free web crawlers are created equal. Here are some of the key criteria to consider when evaluating free crawlers:

Ease of Use

The best web crawlers for beginners have a simple point-and-click or visual interface that walks you through the steps of building your crawler, without requiring any coding. Look for features like:
– Ability to scrape by clicking on the target data
– Automatic detection of data fields and pagination
– Visual editing of the crawler steps
– Clear previews of the data being extracted

Scalability and Limits

Consider how much data you need to scrape and at what frequency. Free web crawler plans will have limits on the number of pages you can crawl or rows of data you can export, so check that these align with your needs. Also look at whether you can run crawls in parallel or schedule recurring crawls.

Data Quality

Raw website data often needs cleaning and standardizing before it‘s ready for analysis. Some web crawlers include built-in data transformation and cleaning options that can save you a lot of tedious data wrangling later. Useful features to look for include:
– Eliminating duplicate results
– Splitting or combining data fields
– Reformatting dates, numbers, etc.
– Adding or filtering data

Support and Documentation

Even with a user-friendly tool, you may still need some guidance to get your crawlers working effectively, especially when you run into the anti-bot measures many sites use to prevent scraping. Check if the web crawler provides:
– Tutorials and how-to guides
– Troubleshooting tips
– Documentation on all features
– Responsive customer support

With these criteria in mind, let‘s take a look at 9 of the best free web crawlers for beginners.

1. Octoparse

Octoparse is a powerful visual web scraping tool for Windows and Mac. Its point-and-click interface makes it very intuitive for non-programmers to scrape text, images, and other data from websites.

Key features:

• Automatic detection of data fields
• Can handle complex site structures like infinite scroll and drop-down menus
• Built-in data cleaning, including removing duplicates and extracting specific data with regex
• Cloud platform to run your crawlers 24/7
• API access to extracted data
• Workflow designer to integrate crawled data with other apps

The free plan allows you to build up to 10 crawlers and scrape unlimited pages per crawl. The main limitation is that free crawls can only run for 2 hours per day.

There is extensive documentation and an active user forum where you can ask questions. Email support is also available.

2. ParseHub

ParseHub is another powerful visual web crawler with a point-and-click interface. It handles JavaScript-heavy sites well and can crawl data behind logins and forms.

Key features:

• Can extract data from drop-down menus, pop-ups, and infinite scroll
• Supports crawling multiple pages based on a URL pattern
• Relative selection for scraping similar data across many pages
• Scheduled crawling and API access on paid plans

The free plan allows 5 projects and 200 pages per run, with results stored for 14 days. Documentation is detailed but lacks screenshots. Live chat support is available.

3. WebScraper.io

WebScraper.io is a Chrome extension for scraping data directly from your browser. While not as powerful as standalone tools, it‘s a good starting point for simple crawling.

Key features:

• Create "recipes" by clicking on the data you want
• Navigate to new pages based on links
• Export to CSV or copy to clipboard

The free plan is limited to 10K pages per month and standard support. The Team plan unlocks more advanced features like scheduled crawling and API access.

Documentation covers the main functionality but has few examples. Support is available via live chat and email.

4. Portia

Portia is an open-source visual web crawler based on Scrapy, a popular Python framework for web scraping. While more technical than other tools on this list, it has an intuitive UI for non-coders.

Key features:

• Navigate websites and click elements to scrape
• Define crawling rules with a visual selector
• Reusable templates for scraping similar pages
• Can crawl JavaScript-rendered content

Since it‘s open source, Portia is completely free with no limits. You‘ll need to install and host it yourself though.

Documentation is limited but the interface is straightforward. Community support is available via GitHub issues.

5. Dexi.io

Dexi.io is a comprehensive web scraping platform for businesses, but also offers a free plan for small-scale crawling.

Key features:

• Multiple bot types for different scraping tasks
• Can extract data from tables, lists, and maps
• Includes "pipes" for cleaning and merging data
• Cloud-hosted platform with scheduling

The free plan allows 2 bots and 10K pages per month, with community support. The main limitation is that you can only run 2 concurrent crawls.

There is extensive documentation but it assumes some technical knowledge. Email support is responsive.

6. Outwit Hub

Outwit Hub is a browser-based web scraping tool with both free and paid versions. The free Outwit Hub Light has fewer features but is still useful for basic crawling.

Key features:

• "Fast Scrape" mode to grab all data at once
• Can scrape email addresses and phone numbers
• Supports XPath and regex for more targeted scraping
• Save and reuse queries

The free plan has no monthly limits but lacks advanced features like API access and scheduled scraping.

Documentation covers all the main functionality with helpful annotated screenshots. Support is available through a ticketing system.

7. Spidey

Spidey is a lightweight desktop web crawler for Windows. While it lacks advanced features, it‘s very easy to use for beginners.

Key features:

• Can crawl multiple URLs simultaneously
• Saves scraped data in CSV format
• Allows basic configuration like crawl depth and politeness delay
• Supports proxies to avoid IP blocking

Spidey is completely free to use with no restrictions. However, it hasn‘t been updated since 2016 so may not work on some modern websites.

Documentation is minimal but the tool itself is straightforward. No official support is available.

8. Scrapy

Scrapy is an open-source Python framework for building web crawlers. While it requires coding skills to use directly, it powers many other tools on this list under the hood.

Key features:

• Supports crawling and scraping at scale
• Built-in support for common tasks like handling cookies and redirects
• Extensible with custom middleware and pipelines
• Can export data in multiple formats

As an open-source tool, Scrapy is completely free with no limits. But you‘ll need Python programming knowledge to take full advantage of it.

Documentation is comprehensive, covering everything from installation to advanced usage. There is also a large community of users providing support via Stack Overflow and IRC.

9. Apify

Apify is a cloud-based web crawling and scraping platform aimed at developers. But it also provides pre-built "actors" for common scraping tasks that anyone can use.

Key features:

• Large library of pre-made scrapers for popular sites
• Web Scraper tool with a visual point-and-click UI
• Scheduled and on-demand crawling
• Programmable through API or JavaScript/Python

The free plan includes $5 of monthly usage credits, which is enough for light scraping. Paid plans scale up to enterprise needs.

Documentation is developer-focused but the pre-built scrapers have clear instructions. Support is available through live chat and email.

Web Crawler Comparison Table

Conclusion

With the right tool, web scraping doesn‘t have to be difficult or expensive, even for non-programmers. The 9 free web crawlers covered in this article are all capable of extracting data from websites with minimal setup and no coding required.

For beginners, I recommend starting with a visual point-and-click tool like Octoparse, ParseHub, or WebScraper.io. These provide an intuitive interface for building crawlers and include handy features for data cleaning and export.

As you scale up your web scraping, you may want to upgrade to a paid plan to unlock advanced functionality like API access, scheduling, and concurrent crawling. Cloud-based platforms like Dexi.io and Apify are good options here.

Alternatively, if you‘re willing to invest some time in learning a programming language like Python, building your own crawlers with open source tools like Scrapy gives you complete control and flexibility.

Whichever web crawler you choose, take some time to explore the documentation and community resources to learn how to get the most out of it. With practice, you‘ll be able to automate your data collection and free up your time for more important tasks.