Browser-Based VPN Extensions vs System-Level VPN: Key Differences

A VPN app protects your whole device. A VPN browser extension protects only the browser it's installed in, and many are really proxies rather than full VPNs. Both have their place, but they're not interchangeable.

What each one covers

• VPN app: all traffic from every app, including email clients, games, updates and other browsers, goes through an encrypted tunnel.
• VPN extension: only Chrome's web traffic goes through the provider. Everything else on your computer uses your normal connection.

How they work

VPN apps use VPN protocols such as WireGuard or OpenVPN to create a tunnel at the system level. Most browser extensions instead set Chrome to use the provider's proxy servers, usually over an encrypted HTTPS connection. Traffic is still protected between you and the server, but only for the browser.

Leaks extensions can miss

• WebRTC: video-call technology in Chrome can reveal your real IP to a site even with a proxy extension on. Some VPN extensions block it; many don't. WebRTC Privacy Shield sets Chrome's WebRTC policy to stop it.
• DNS: depending on setup, site lookups may still go through your normal connection.
• No kill switch: if the extension stops, Chrome may simply connect directly.

Test any VPN with a leak test. See free VPN leak tests.

Where extensions are better

• Quick and light: switch location in a couple of clicks without touching the rest of your system.
• Split use: keep your browser on the VPN while games, video calls or work apps use your normal, faster connection.
• Work computers where you can't install apps but can add extensions (check your employer's rules first).

Where apps are better

• Public Wi-Fi, where everything on the device should be protected.
• Torrenting and other apps outside the browser.
• When you need a kill switch and leak protection you can rely on.

Which to use

• Privacy and security: the app, with the kill switch on. See what a VPN kill switch is.
• Changing your location for one site: the extension is fine.
• Both: many paid providers include the extension and app together, so you can use whichever fits.

Avoid free VPN extensions from unknown companies. An extension that routes all your browsing can see all of it, and some free ones make money from that data.