Free Online Tool
Check proxies instantly in your browser
Paste your proxy list, hit check, and see working and dead proxies in real time — no download, no account, straight from the browser.
How it works
Check proxies in 3 steps
Paste or upload
Paste proxies from clipboard or drag in a .txt file. Supports ip:port, user:pass@ip:port, and ip:port:user:pass formats.
Select protocols
Choose which protocols to check: HTTP, HTTPS, SOCKS4, SOCKS5. Or leave all four selected to test everything at once.
Get results
Hit Check. Working proxies stream back in real time with their protocol, response time, and anonymity level.
特徴
Quick proxy checking, straight from the browser
No install required
Runs entirely in your browser — nothing to download or configure. Works on any device with a modern browser.
Paste & check instantly
Paste proxies one per line — ip:port, user:pass@ip:port, ip:port:user:pass, or protocol://ip:port. Results stream back in real time as each proxy is verified.
HTTP, HTTPS, SOCKS4 & SOCKS5
Supports all four major proxy protocols. The checker detects working proxies across each protocol automatically.
Session isolated — your results only
Each browser session is fully private. Your proxy list and results are never visible to other users.
Protocol detection
Each proxy is tested against your selected protocols and tagged with what it supports — no manual labelling needed.
Free — no account needed
No signup, no usage caps, no paywalls. Check as many proxies as you need, directly in your browser.
Desktop App
Need more control? Download the Proxy Checker.
Up to 1,850 threads
Run up to 1,850 concurrent checks with one protocol selected. Fewer protocols = more threads.
Timeout & retry control
Configure timeout and retry count independently for the right balance of speed and accuracy.
匿名性検出
Pings 7 judge servers to verify whether a proxy leaks your real IP and reports anonymity level.
Blacklist filtering
Cross-references results against Spamhaus DROP, EDROP, and MYIP.MS. Add your own sources.
Data capturing modes
Full Data captures headers and timings. Server mode parses response signatures. Traces logs route data.
Check history
Every check is saved locally and can be re-exported at any time. Track proxy pool quality over time.
Protocol-prefixed export
Results export as protocol://ip:port with automatic priority: SOCKS5 → SOCKS4 → HTTP/S.
Free & open source
MIT licensed and fully open source on GitHub. No account, no subscription, auto-updating.
Side by side
Online vs Desktop
| 機能 | Online | Desktop |
|---|---|---|
| HTTP / HTTPS / SOCKS4 / SOCKS5 | ✓ | ✓ |
| Drag & drop / clipboard import | ✓ | ✓ |
| Protocol detection | ✓ | ✓ |
| Real-time streaming results | ✓ | ✓ |
| Export with protocol prefix | ✓ | ✓ |
| No download required | ✓ | ✕ |
| Adjustable thread count (up to 1,850) | ✓ | ✓ |
| Configurable timeout & retries | ✕ | ✓ |
| Shuffle mode | ✓ | ✓ |
| Keep-Alive connections | ✕ | ✓ |
| Local DNS resolution | ✕ | ✓ |
| Anonymity detection via judge servers | ✓ | ✓ |
| Custom judge server targets | ✕ | ✓ |
| Public IP auto-detection | ✕ | ✓ |
| Blacklist filtering | ✕ | ✓ |
| Custom blacklist sources | ✕ | ✓ |
| Check history & re-export | ✕ | ✓ |
| Data capturing (Full Data / Server / Traces) | ✕ | ✓ |
| Unlimited proxy count | ✕ | ✓ |
| 100% local network accuracy | ✕ | ✓ |
Verified proxies from ProxyScrape
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よくある質問