The three tools get compared as if they were rivals, and they are not. A proxy changes where one stream of traffic comes from. A VPN changes where your whole computer comes from. An antidetect browser changes what the browser itself looks like, and it needs one of the first two to change where it comes from. Which one you need depends on one question: how many identities does the website have to see, and how much of each identity has to be different?
What each one changes
| Proxy | VPN | Antidetect browser | |
|---|---|---|---|
| Changes your IP | For the app or profile that uses it | For the whole device | Only through a proxy you bind |
| Encrypts traffic on your network | Not by itself | Yes, to the VPN server | Same as the proxy or VPN under it |
| Changes your fingerprint | No | No | Yes, per profile |
| Separates cookies and storage | No | No | Yes, per profile |
| Keeps WebRTC and timezone consistent | No, you handle it | Partly, and only for one identity | Yes, per profile |
| Number of identities | One per proxy | One | One per profile |
Proxy: one exit for one stream of traffic
A proxy is a server that forwards requests on your behalf. The site sees the proxy's address instead of yours. Proxies are configured per application or per browser profile, which is the whole point: you can give different things different exits.
Two details matter in practice. First, the protocol. HTTP and HTTPS proxies carry web traffic over TCP; SOCKS5 (RFC 1928) is protocol-agnostic and can in principle carry UDP too. Second, the origin of the address. Datacenter IPs are cheap and easy for a site to recognise as datacenter; residential and mobile IPs belong to consumer connections and look like ordinary visitors.
A proxy does nothing to your fingerprint, and it does not automatically cover everything the browser sends. WebRTC's STUN requests go out over UDP and bypass an HTTP proxy, which is the classic WebRTC leak. The timezone stays whatever the OS says. A proxy gives you an exit; keeping the rest of the browser consistent with that exit is your job.
VPN: one exit for the whole machine
A VPN builds an encrypted tunnel from your computer to a server, and everything leaves through that server: every browser, every app, every profile. That is exactly right for the problems it was designed for. On a café Wi-Fi it hides your traffic from the network you are on. Abroad, it gives you your home country back for one account.
For more than one identity it is the wrong shape. Every profile on the machine gets the same exit, so a VPN separates you from your home IP without separating the profiles from each other. VPN address ranges are also well known and widely labelled as such, so a "residential" identity behind a VPN often is not one. And a VPN app that rotates servers changes your location story mid-session, which is the kind of inconsistency the timezone guide warns about.
Antidetect browser: one browser identity per profile
An antidetect browser gives each profile its own browser identity: a separate storage directory, its own fingerprint (User-Agent, Client Hints, screen, GPU, Canvas, fonts, audio, timezone, language) and its own proxy binding. The identity is generated to be internally consistent, so the profile looks like one plausible machine rather than a collection of random values.
What it does not do is provide the network exit. Every profile still needs a proxy, and the quality of that proxy sets the ceiling for the whole profile. The browser's job is to make everything else agree with the exit: WebRTC reports the proxy's address, the timezone follows the proxy's location, the language fits, and none of it leaks across to another profile.
Proxy: change where one thing comes from. VPN: change where everything comes from. Antidetect browser: change what each thing looks like, and give each thing its own place to come from.
Which one you need, by situation
- Privacy on a network you do not trust. A VPN. Encryption to a server you trust is the feature; the exit hardly matters.
- One account that needs to look like it is at home while you travel. A VPN with a fixed server, or one proxy. Keep the OS timezone and language matching the exit.
- A few accounts on one platform, checked from the same computer. Separate profiles with separate proxies, and a browser that separates fingerprints too. Cookies alone do not do it; the isolation checklist explains why.
- Many accounts, a team, or scripts. The same as above, with templates for consistency, roles so people cannot open the wrong profile, and an API so automation runs inside proper profiles instead of a bare headless browser.
- Scraping public pages. Proxies matter most, ideally rotating residential ones; a consistent browser identity keeps the scraper from being blocked on fingerprint alone.
Combining them without one undoing the other
A VPN on the system with proxies in the browser profiles is a legitimate setup: the VPN hides the fact that you use proxies from your local network, and each profile still exits through its own proxy. Two things to check afterwards. First, that WebRTC in each profile reports the profile's proxy and not the VPN's exit, which is what happens when the profile leaves UDP alone. Second, that IPv6 does not slip around the proxy through the VPN.
A proxy on the system plus a proxy in a profile is chained, not layered: the site sees the last one. Chains slow everything down and rarely add anything except confusion about which exit you are actually using. Prefer one proxy, bound to the profile, and check it in the Lab.
Check what your current setup actually shows
The Lab shows the exit IP, the WebRTC candidate and the timezone your browser reports, so you can see whether the proxy, the VPN or the OS is speaking.
How Mango Browser fits in
Mango is the antidetect layer, and it expects you to bring the proxies. Each profile binds its own HTTP, SOCKS5 or residential proxy, with proxy import and a check before you rely on it. WebRTC replaces the public candidate with the proxy's exit by default, so it agrees with the HTTP IP without extra work, and timezone, language and geolocation can follow the exit automatically.
Beyond one profile, templates and batch creation keep many profiles consistent, team roles decide who can open what, and the Local API and MCP let scripts and AI tools work inside real profiles. The VPN question stays yours: run one for the network you sit on if you want, and let each profile keep its own exit.