Best Proxy Checkers in 2026: ProxyScrape's Free Tools & Top Alternatives

In 2026, the most capable free proxy checkers test HTTP, HTTPS, SOCKS4, and SOCKS5 in a single pass and classify each working proxy's anonymity as transparent, anonymous, or elite. This guide covers two free checkers we built — one browser-based that handles up to 5,000 proxies, one open-source desktop app with no list cap — plus three third-party tools worth knowing about. A proxy checker tells you which IPs in your list are alive, fast, and anonymous enough for the job — and which to throw out before they cost you a scrape, an account, or a deal.

A proxy checker verifies the functionality, anonymity, and speed of a proxy. Given a list of proxies, it tells you which are alive, what protocol each one supports (HTTP, HTTPS, SOCKS4, SOCKS5), the response time, the geolocation, and the anonymity level. Some checkers also flag blacklisted IPs and the known proxy/VPN fingerprints that get a connection blocked before the request even lands.

Whether the proxies are scraped from a free list, rented from a provider, or part of an in-house pool, testing matters. Stale proxies cost more than they save: a dead proxy hangs your scraper, a slow proxy bottlenecks a batch job, a transparent proxy leaks your real IP, and a blacklisted proxy gets you banned from the target site before you fetch a single page.

Even paid providers have hiccups — rotation glitches, mislabelled geolocation, or sub-pools that get burned faster than others. Spot-checking with a separate tool is the cheapest insurance there is.

Five things matter when choosing a proxy checker:

• Protocol coverage — HTTP, HTTPS, SOCKS4 and SOCKS5 in one pass, not one tool per protocol.
• Bulk capacity — testing 50 proxies is easy; testing 5,000+ is the actual problem.
• Anonymity detection — whether the proxy leaks your real IP via headers like X-Forwarded-For or Via.
• Real-time results — streaming results so you can act on the first working proxies before the rest finish.
• No friction — free, no account, runs where you work (browser or local machine).

ProxyScrape ships two free proxy checkers that share the same testing engine: a browser-based online tool for quick checks, and an open-source desktop app for serious bulk and advanced workloads. Pick the one that fits the job.

If you...	Use...
Are testing a list of up to 5,000 proxies, once or occasionally	Online Proxy Checker — no install
Need to test unlimited proxies, with custom timeouts, blacklists, and check history	Desktop Proxy Checker — free, MIT-licensed

The ProxyScrape Online Proxy Checker runs entirely in your browser. Paste up to 5,000 proxies in any of these standard formats and tests stream back in real time:

It mixes formats freely — you can paste a list containing all four shapes in one go. It checks HTTP, HTTPS, SOCKS4, and SOCKS5 in a single run, reports response time and country for each working proxy, and classifies the anonymity level as transparent, anonymous, or elite. No account, no signup, no install.

It's the right pick when you've grabbed a free list, received a sample from a vendor, or just want to validate a handful of proxies without touching your local environment.

The ProxyScrape Proxy Checker is a free, MIT-licensed, fully open-source desktop application. It removes the online tool's 5,000-proxy cap, supports up to 1,850 concurrent threads with one protocol selected (fewer protocols means more threads), and adds the controls a serious operator needs:

• Configurable timeouts and retries — tune each independently for the right balance of speed and accuracy.
• Keep-Alive connections and local DNS resolution for accurate results against real-network conditions.
• Anonymity probing via a configurable judge-server pool — override the bundled judges with your own URLs.
• Blacklist filtering against Spamhaus DROP, Spamhaus EDROP, and MYIP.MS, plus any custom sources you add.
• Check history with re-export so you can compare pool health over time.
• Three data-capture modes — Full Data, Server, Traces — for debugging unusual responses.

Because it runs locally, results reflect what your network actually sees — no server-side intermediary. The source code lives on GitHub for inspection. Windows (x64 and Arm64) and Mac (Apple Silicon and Intel) builds ship today; a Linux build is planned.

Get started: Try the online checker · Download the desktop app

If you want to spot-check against another tool — always a good habit — these are the third-party checkers that are still maintained and worth a look in 2026.

FOGLDN Proxy Tester is a free downloadable Windows app that pings a user-supplied URL through each proxy and reports the round-trip latency. It supports both rotating and sticky proxies and runs multiple checks in parallel via multiprocessing. It's a focused single-purpose tool — HTTP/HTTPS only, no SOCKS support, no anonymity classification, no protocol detection, no blacklist filtering — but the latency-against-a-real-target check is something most browser-based checkers don't do, and that makes it a useful second opinion.

Proxy6.net is a free online checker focused on basic availability. It supports HTTP, HTTPS, and SOCKS, returns proxy type and host country, and handles small batches directly in the browser with no account. Useful for one-off sanity checks; less suitable for large lists, anonymity classification, or operations work.

Hidemy.Name is an online checker that tests speed and anonymity level (high, average, low, none) across HTTP, HTTPS, and SOCKS5. Results include round-trip and packet-loss data against the user's chosen target, with flexible export options. The anonymity classification with multiple thresholds is the standout feature — Hidemy.Name's four-level grading (high / average / low / none) is finer-grained than the three-level transparent / anonymous / elite scale ours and most other checkers use, which can matter if you need to filter for a specific reputation band.

Tool	Runs in	Free	Bulk capacity	Protocols	Anonymity detection	Open source
ProxyScrape Online	Browser	Yes	Up to 5,000	HTTP, HTTPS, SOCKS4, SOCKS5	Yes (3 levels)	—
ProxyScrape Desktop	Windows & Mac local	Yes	Unlimited (up to 1,850 threads)	HTTP, HTTPS, SOCKS4, SOCKS5	Yes (3 levels, custom judges)	Yes (MIT)
FOGLDN	Windows local	Yes	Multi-threaded	HTTP / HTTPS	No	No
Proxy6.net	Browser	Yes	Small batches	HTTP, HTTPS, SOCKS	No	No
Hidemy.Name	Browser	Yes	Moderate	HTTP, HTTPS, SOCKS5	Yes (4 levels)	No

Most online checkers are good enough for under-100-proxy lists; most desktop checkers are paid, closed-source, or Windows shareware from 2014. We built ours because operating a proxy provider made the gaps obvious:

• Bulk without ceremony. Up to 5,000 proxies in the browser; unlimited on the desktop. No "upgrade to test more" paywall.
• Real anonymity data. Both tools probe judge servers and report transparent / anonymous / elite — so you can filter for high-anonymity proxies before scraping.
• Open source on the desktop. The desktop app is MIT-licensed and lives on GitHub. Inspect the network code, audit the judge logic, fork it if you want a custom build.
• Multi-format input. Paste whatever you have — ip:port, user:pass@ip:port, ip:port:user:pass, or protocol://ip:port — no pre-processing.
• No account, no signup. The browser tool runs anonymously; the desktop app is a single download.

For browser-based bulk checks, the ProxyScrape Online Proxy Checker handles up to 5,000 proxies across HTTP, HTTPS, SOCKS4 and SOCKS5 in one pass. For unlimited proxies, custom judge servers, blacklist filtering and check history, the free open-source ProxyScrape Desktop Proxy Checker is the most capable free option.

Paste the proxy into a checker — formats like ip:port or user:pass@ip:port — and run a test. A working proxy returns within the timeout window, reports a non-zero response time, and connects to the protocol it claims to support. A failed test usually means the proxy is dead, slow, blocked, or speaking a different protocol than advertised.

Anonymity level reflects how much the proxy leaks about you to the destination server. Transparent proxies forward your real IP via headers like X-Forwarded-For — they hide nothing. Anonymous proxies hide your IP but identify themselves as proxies via headers like Via. Elite (or high-anonymity) proxies hide both your IP and the fact that a proxy is in use.

Yes — full-protocol checkers like the ProxyScrape Online and Desktop Proxy Checkers test HTTP, HTTPS, SOCKS4, and SOCKS5 in a single run, reporting which protocols each proxy supports.

Reputable online checkers tie proxy lists to your browser session and don't share results across users. The ProxyScrape Online Proxy Checker isolates each browser session and never exposes your list to other users. If your proxies include sensitive credentials (e.g. paid-provider auth strings) and you want fully local checking, use the open-source desktop app instead.

Checking confirms your proxies work; sourcing them is the other half of the equation. If your free list keeps dying or your provider's pool is getting blacklisted faster than you can rotate, that's usually a signal to look at higher-quality pools — residential, dedicated, or unlimited-bandwidth datacenter. ProxyScrape's paid proxies live next door to the free checkers above, but the checkers work just as well on anybody's proxies. Pick the tool, paste the list, find out what you've got.