Firefox will get a built-in free VPN in v149, rolling out March 24 to the US, France, Germany, and the UK.

It routes only browser traffic through a Mozilla proxy for privacy protection, with no extra downloads.

Free use is capped at 50GB per month — enough for casual browsing, but Mozilla doesn't say what happens if you go over.

The world of free VPNs can be really hit-or-miss. Some companies use them to harvest data from you to make a profit, while others will actually respect your privacy, but you kind of wonder how a business can give away such a service for nothing. As such, a free VPN from a reputable company is pretty much the best deal you can get, because the business actually has a reason not to betray its user base.

Well, if you're on the hunt for a free VPN for your browsing, Mozilla is working on something you might be interested in: a free VPN built right into Firefox. However, before you consider downloading terabytes of data with this feature, there is a key catch.