Validate credentials at hundreds per second
A high-concurrency credential validation platform for testing your own login endpoints. Managed workers, fingerprint rotation, proxy pooling, and automated captcha handling — from a single dashboard.
Built to measure authentication resilience
Everything you need to load-test your login flows — fingerprinting, proxies, captchas, and workers — managed automatically behind one dashboard.
High-concurrency runs
Validate thousands of credentials per minute. Worker capacity scales with your plan, so long lists finish fast.
Browser fingerprint rotation
Every request presents a different Chrome, Firefox, Safari, or Edge profile. Pattern-matching defenses see a rotating browser population.
Proxy pool management
Bring your own HTTP/SOCKS5 proxies. We rotate per request, quarantine bad proxies automatically, and spread traffic across your IPs.
Automated captcha handling
Turnstile and reCAPTCHA challenges are detected and solved automatically so runs don't stall.
CSRF-aware flows
Token extraction and cookie replay are handled automatically for common auth frameworks — no manual configuration per site.
Live dashboard
Every check streams to your dashboard in real time. Filter by status, inspect responses, and export results when the run finishes.
From list to results in four steps
No CLI, no scripts, no infrastructure to manage. Everything runs through the dashboard.
- 01Create an accountSign up in under a minute and verify your email. Choose a plan that fits your workload.
- 02Upload your combo listPaste email:password pairs, one per line. Add a proxy list if your target requires IP rotation.
- 03Configure and start a runPick a target, set your worker count and browser profile, then start. The run begins in seconds.
- 04Watch results liveValid and invalid results stream in real time. Export the final report when the run completes.
What teams use Account Checker for
Security testing
Verify that rate limits, lockout policies, and bot detection on your own login endpoints actually work under realistic load.
Data breach triage
Check leaked credential dumps against your own systems to identify compromised accounts and force password resets.
Account recovery audits
Confirm which accounts are still active and reachable so you can reach out or clean up stale records.
Simple plans, worker-based pricing
Each plan sets the maximum concurrent workers per run. Upgrade at any time — plans are assigned by an admin after signup.
| Plan | Workers | Price | Description | |
|---|---|---|---|---|
| micro | 25workers | $5/mo | Starter tier | Get started |
| basic | 50workers | $10/mo | Entry plan | Get started |
| standard | 75workers | $15/mo | Standard plan | Get started |
| starter | 100workers | $20/mo | Priority queue | Get started |
| proPopular | 200workers | $35/mo | Priority queue + API access | Get started |
| business | 500workers | $70/mo | Everything included | Get started |
Frequently asked questions
Is it legal to use?
Account Checker is designed for authorized security testing of systems you own or have explicit written permission to test. Misuse against third parties is against our terms and may be illegal.
Do I need my own proxies?
Runs work without proxies, but targets with IP-based rate limits will perform better with a proxy pool. You can add proxies per run.
What happens to my combo lists and results?
Run data is used only to execute your runs. You can export your results and delete them from the dashboard at any time. See our privacy policy for details.
Can I scale to more workers?
Yes — upgrade your plan to raise the maximum concurrent workers per run. Capacity scales without downtime.
Ready to start?
Register, pick a target, paste your combo list, and start a run. Results stream live and the run auto-stops when it finishes.