The VPN creates a secure connection to one of Opera's five global server locations. It gives the user the choice of location. It also incorporates Adblocker.

For those who prefer not to pick, the browser will select the best server location, based network speed, latency, server location and server capacity.

The VPN feature, which is operated by an Opera subsidiary, SurfEasy, uses a 256-bit AES encrypted connection. No logs are stored by either Opera or SurfEasy.

"By making our browser VPN free and easy to use, we hope to make it an essential tool, just as the lock and key is to your house."

Opera has versions available for Windows, the Mac and Linux.

"We know that people are concerned about their privacy online and that the interest in VPNs is increasing," Kolondra said.

"However, two major obstacles are blocking people from using it: VPNs are too complicated to use, and they require a monthly subscription. Opera resolves both issues by introducing its free and easy-to-use service right into the browser."