Breach Pwned Email Checker
Check if your email has been breached. Uses k-anonymity model for privacy-preserving HIBP-style checks.
Tool Upgrade Coming Soon
This tool is currently a preview template. We are actively upgrading it to 100% blueprint compliance with 10 extra features. Like all UnQTools features, the upgraded version will run 100% locally in your browser with zero network requests.
About Breach Pwned Email Checker
Check if your email has been breached. Uses k-anonymity model for privacy-preserving HIBP-style checks. Everything runs locally in your browser — your data never leaves your device.
How to use
- Enter your input in the tool above.
- Adjust any options to your preference.
- Use the Copy or Download buttons to save the result.
- Everything happens locally — your data never leaves your browser.
FAQ
What does this tool do?
Check if your email has been breached. Uses k-anonymity model for privacy-preserving HIBP-style checks.
Is my data sent to a server?
No. This tool runs 100% in your browser. Nothing is uploaded, tracked, or stored remotely.
What extra features does this tool have?
Extras: (1) (1) Email breach check, (2) (2) k-anonymity privacy model, (3) (3) Hash prefix search, (4) (4) Breach database (bundled, offline), (5) (5) Breach details (name, date, data classes), (6) (6) Multiple email batch check, (7) (7) Password breach check (SHA-1), (8) (8) Breach timeline, (9) (9) Export report, (10) (10) Copy results, (11) (11) PWA offline, (12) (12) No network for core check (bundled DB)
Does this work offline?
Yes — install as a PWA and use it without network.
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