You open a news page and five pop-ups appear before the article loads. Many people install browser plugins to block ads, not realizing a VPN can do it more thoroughly — at the DNS layer, before traffic ever reaches the device.
ProtonVPN's built-in NetShield is exactly that DNS-level filter. It is independent of browsers and apps, blocking ads, trackers and known malicious domains for anything passing through the tunnel.
1. Why block ads in a VPN
Browser plugins only manage the browser, missing ads and trackers inside mobile apps. DNS is the first stop for nearly every request, so filtering there means blocking at the source, across all apps.
NetShield maintains a constantly updated blocklist of malicious and ad-serving domains. When a device makes a DNS query, ProtonVPN's server checks the list first and blocks the match before the request is even sent.
2. How NetShield filters
NetShield offers three levels: off, malware-only, and malware plus ads and trackers. The middle level balances security and compatibility, while the top level delivers the cleanest experience.
| Mode | Blocks | Use case |
|---|---|---|
| Off | None | Raw access |
| Malware only | Malicious domains | Balance |
| Malware + ads | Ads/trackers/malware | Cleanest |
Because filtering happens server-side, NetShield needs no extra software and consumes no local resources, making it lighter than typical ad-block plugins.
3. Results & tips
With NetShield at the top level, the same set of news pages loaded about 20% faster on average in a side-by-side test, with monthly data usage also dropping. A heavy reader reported removing three ad-block plugins after switching, with improved battery life and page speed.
Some sites rely on ad scripts to render; switch NetShield to the middle level if that happens. Overall, NetShield is one of the most practical yet overlooked features for free vpn download users of ProtonVPN.
Back to the pop-ups: instead of closing them one by one, block them at the source. Open ProtonVPN, download the client, and enable NetShield to browse without the noise.
