First and foremost, they’re free. That’s a bit obvious, but it’s a significant advantage. Just think, you can take any one of the guides on our blog, code your scraper, and then use it together with the proxies.
There is much to say about the benefits of proxies in web scraping, and we won’t go over them in this article. But, if you want to know more, check out this article on rotating proxies, in which we present just how big of a difference an IP pool can make.
Sadly, that’s pretty much the only advantage that free proxies have over others. Now, onto the cons.
Since these IPs are freely available, everyone knows about them. So, websites likely already know the addresses and have already blocked them. Either someone already tried to access the website you’re interested in and got the IP banned, or the webmaster found the free proxy provider, copied all the IPs, and added them to a blacklist. This is not always the case, but it happens often.
Free IPs are often slow and lack anonymity. Maintaining proxies costs money, so you can’t seriously expect to get top-quality IPs at no cost. As the saying goes, you get what you pay for.
Free proxies may expose you to hackers. As I just said, it’s a bit unusual for someone to offer free addresses for nothing. One nefarious reason someone may do this is to monitor and copy the information that passes through the proxy. After that, they may use that information for malign purposes. Again, this isn’t a guarantee, but you should stay on guard.