socks5
The form you will most often be handed on this site. Write it as socks5 followed by the credentials, the host and the port. This is the scheme the proxy listings here actually name.
Online Proxy Tester: HTTP proxy online test & SOCKS proxy online test
Use this page as an online proxy tester: run an HTTP proxy online test or a SOCKS proxy online test (SOCKS4/SOCKS5) through a public probe URL you choose. Test up to 20 proxy lines per run and see latency, bytes, and optional exit IP.
Supported formats
You can paste these shapes into the proxy list. HTTP shorthand is normalized on the server.
HTTP proxy
- user:pass@proxy.example.com:8080
- proxy.example.com:8080 :user:pass
- http://user:pass@proxy.example.com:8080
SOCKS proxy
- socks5://user:pass@socks.example.com:1080
- socks4://user:pass@socks.example.com:1080
SOCKS URLs must include the scheme (socks4:// or socks5://) and slashes.
Must be http or https. Only common web ports are allowed. Hostname must resolve to a public address.
Maximum 20 proxy URLs per run. Credentials are used only for this test and are not stored.
Privacy note
Proxy credentials, proxy URLs, and the probe URL are sent to our API only for this connectivity test and are not stored.
How it works
- Paste one proxy URL per line. This tool supports an HTTP proxy online test (http/https upstream) and a SOCKS proxy online test (socks4/socks5).
- Set the probe URL (https recommended). The default loads a small public asset.
- Click Test proxies. Each row updates when its test finishes.
- Use Stop to cancel tests that have not completed yet.
- Private or loopback proxy hosts are rejected by the server.
How to give it a proxy
Three Schemes, One Line Each
An online proxy tester can only be as good as the lines you give it, and the format is the part people get wrong, and a malformed line looks identical to a dead proxy. These are the three forms the tester accepts.
socks4
The older variant, still sold and still in use. Same shape as socks5. If a supplier gave you a bare host and port with no scheme, socks4 and socks5 are both worth trying before concluding it is dead.
http
Accepted, though notably no live proxy listing on this site uses the phrase in its own text. If your line came from elsewhere, this is the scheme it most likely wants.
Credentials go in the line, not in a separate box. Username and password sit between the scheme and the host. A proxy that requires authentication and receives none fails in a way that reads exactly like an unreachable host, which is the single most common false conclusion here.
What the result means
Answering Is Not the Same as Working
A proxy has more than two states, and treating the test as pass or fail throws away most of what it told you.
| Result | What it means | What to do |
|---|---|---|
| Answers, low latency | The proxy is reachable and responsive from where the test ran. | Nothing. This is the outcome you wanted, and it is worth recording the number so you can tell later whether it degraded. |
| Answers, high latency | It works and it is slow. Slow proxies pass a check and then fail in use, because the thing you point at them times out rather than errors. | Compare against the others in the same batch. A single slow line among fast ones is usually that line, not the network. |
| No answer | The host did not respond, or the credentials were missing or wrong, or the scheme was wrong. These three look the same from outside. | Re-check the line format first, then the credentials, and only then treat it as dead. |
Why on a marketplace
The Shelf Talks About SOCKS, and Almost Nothing Else
Measured on the live proxy listings rather than assumed, and the result shapes what this page leads with.
SOCKS is the shelf vocabulary
Of the live proxy listings here, well over a third name SOCKS somewhere in their own text, and not one of them uses the phrase http proxy at all. So a buyer arriving from a listing is holding a socks line, and the http field on this page is for lines that came from somewhere else.
Residential is a minority claim
Roughly one listing in five names residential. That word describes where the address is registered, not how fast it is and not whether it is shared. Latency is measurable and this page measures it; the rest of the claim is not something any tester can check.
Working through a batch
Check a Proxy List in One Pass
Most people arrive here holding more than one line, and the batch tells you things a single test never can.
Test them together
When you check proxy list entries side by side, proxy latency becomes readable as a comparison rather than a raw number. One line at four times its neighbours is that line, not your connection, and that is only visible in a batch.
Group by scheme
Run your socks5 proxy checker pass and your socks4 proxy test pass separately when a supplier handed you a mixed list. A whole group failing together points at the scheme or the credentials; scattered failures point at the addresses.
Keep the first result
An http proxy test on day one is the baseline you compare against in a fortnight, when something has slowed down and you cannot remember whether it always was. Nothing else will tell you later what it used to do.
Limits
What a Tester Cannot Tell You
The honest boundary of this page, stated so nobody reads more into a green result than it carries.
It cannot grade anonymity
Whether a site can tell you are behind a proxy depends on that site, not on the proxy answering a request. No tester settles it, and any tool claiming to is telling you about one target at one moment.
It cannot tell you who else is on it
A shared address can be perfectly fast and already burned by somebody else's traffic. That is the risk with cheap proxies and it does not show up as a latency figure or as an error.