A web proxy is a website that opens other websites for you inside a browser tab. That sentence hides three interesting technical layers: how the request flow travels, what each layer of the network sees, and how the HTML gets rewritten so that clicking a link inside the proxied page keeps the session routed through the proxy. This cornerstone covers all three.
The three-hop request flow
Every proxied page load involves three network conversations chained together:
- Browser → proxy over HTTPS. Your device opens a TLS connection to anyproxy.site (or whichever web proxy you use), the certificate is verified, and a request is sent inside the encrypted channel.
- Proxy → destination over HTTPS. Our server, sitting in a data centre in the region you picked, opens its own TLS connection to youtube.com (or whichever destination). The proxy fetches the page as if it were an ordinary browser.
- Destination response → proxy → browser. The destination hands back the HTML, images, scripts, and CSS. The proxy rewrites the HTML so all subsequent requests route through the same proxy, then streams the result back through the original TLS connection to your browser.
The trick that unblocks the destination is that hops 1 and 2 are unrelated to your local network. From the perspective of any firewall between your device and the destination, only hop 1 exists. Your local network sees an ordinary HTTPS connection to anyproxy.site and nothing about hop 2.
What each layer sees
Understanding “what does X see” is the whole security-and-privacy story of a web proxy. Four observers matter:
Your ISP or school Wi-Fi: sees a TLS connection from your device to anyproxy.site. Can identify the destination hostname (anyproxy.site) via TLS SNI, the source (your IP), and the amount of traffic. Cannot see which pages you loaded through the proxy — that content is encrypted inside the TLS body.
The destination site: sees a request from the proxy server’s IP address. If you selected the Frankfurt region, the destination sees a Frankfurt IP. Cannot see your real IP. Cannot see your ISP. Still sees cookies from prior visits to the destination and any account you sign into during the session — those identify you separately regardless of IP.
The proxy operator (AnyProxy): processes the request in memory while forwarding it. Sees the URL and response. AnyProxy specifically does not log the URLs — aggregate request counts only, deleted after 30 days.
Anyone else on the network path: sees TLS on both hops. Cannot see inside either connection.
The pattern matters especially for censorship-heavy networks where the local ISP or firewall filters by DNS, IP, or TLS SNI. All three filter methods target the destination hostname or IP — and a web proxy substitutes the proxy’s hostname and IP for both.
HTML rewriting: the part that makes it feel native
If a proxy just fetched the initial page and handed it back, clicking any link inside would break — the link would point at the destination directly, and your browser would try to load it without the proxy. The rewriting layer prevents that.
When our server receives the destination HTML, it walks the DOM and rewrites every URL it finds:
<a href="/watch?v=abc">becomes<a href="/proxy-passthrough?target=https://youtube.com/watch?v=abc">(or similar routing pattern) so clicking it goes back through the proxy.<img src="//i.ytimg.com/vi/abc.jpg">becomes a proxy-fronted URL that fetches the image on your behalf.<script src="...">gets the same treatment.- CSS
url(...)references, JavaScript-generated URLs, WebSocket connections — all rewritten.
More sophisticated proxies also intercept JavaScript’s fetch() and XMLHttpRequest calls at runtime, injecting a service worker or a proxy shim that catches dynamically-generated URLs after page load. Newer engines like Scramjet push some of this rewriting into the browser via service workers rather than doing it all server-side.
The user-visible effect is that clicking around the proxied page feels native — every navigation stays inside the proxy tab, and the destination site behaves normally. When the rewriting misses a URL (which happens on complex single-page apps), that request escapes the proxy and fails or exposes your real IP. Robust web proxies get most of the modern web right, but no rewriter is perfect on every JavaScript-heavy application.
Why the proxy needs HTTPS on both hops
Hop 1 uses HTTPS because you would not want your ISP or Wi-Fi provider reading which URLs you asked the proxy to fetch. Hop 2 uses HTTPS because you would not want the destination to think you are connecting over plain HTTP (many sites now refuse plain HTTP entirely, and the ones that accept it usually strip cookies and DRM). HTTPS on both hops means the intermediate network sees TLS on hop 1 and the destination sees TLS on hop 2 — the proxy in the middle bridges the two.
This is why an HTTPS-only web proxy is the modern default. Older “HTTP proxy” concepts that tunnel plain HTTP are now mostly relegated to caching and enterprise inspection use cases where the operator wants to see request contents.
Why AnyProxy runs six regions
The extra hop from your browser to the proxy costs latency — typically 20-50 ms depending on how close you are to the proxy region. Six regions let you pick the closest one:
- Frankfurt (~40 ms for European users)
- Singapore (~50 ms for South and East Asia)
- Virginia (~90 ms for North America)
- London (Pro)
- Tokyo (Pro)
- São Paulo (Pro)
Region choice matters more than paper bandwidth for perceived speed. The best-proxies-for-YouTube-2026 ranking scores each competitor on how many regions they offer and where.
Limits: what a web proxy cannot do
The three-hop mechanism handles browser traffic well. It does not handle:
Native mobile apps. The Instagram app on your phone does not route through the browser — a proxy in a browser tab has no visibility into app traffic. Use the mobile web version (instagram.com in Chrome or Safari) inside the proxied browser tab instead.
DRM streaming. Netflix, Disney+, Prime Video, and every other paid streaming service use client-side DRM that verifies the network path. Proxied streams fail the DRM check. See streaming-video-through-a-proxy for the full breakdown.
Voice-over-IP and WebRTC. Video calls, voice chat, and peer-to-peer connections use WebRTC which negotiates paths outside the browser tab and often bypasses the proxy. Chat messages work; live calls are unreliable.
Non-HTTP TCP protocols. Games, IRC, custom apps that speak proprietary TCP — a web proxy is HTTP-only. For those, a SOCKS proxy or full VPN is needed.
When a web proxy is the right tool
The pattern fits a specific job: one blocked browser page, right now, on a device where you cannot or do not want to install anything. For that job, the three-hop web proxy is the lightest tool that works. For anything else, see the proxy-vs-VPN-vs-Tor decision framework for the broader tool selection guide.