The sniffQR browser extension
Know what is in a QR code before you act on it.
Snip it, upload it, or paste it
Drag a box around any QR code on a page, upload an image, or paste one from your clipboard. No camera needed.
The full local detection engine
Look-alike characters across five scripts, brand impersonation, hidden characters, harmful file types and more - checked right in your browser, no key or account needed.
Honest verdicts
A Safe verdict requires a threat service to have actually said so. No check means Unknown, never Safe.
Private by design
No accounts, no servers, no analytics, no ads. The extension keeps no history at all: one result, read and gone.
Get it for your browser
Safari comes later - it ships through a different store.
The extension does what a browser can do and does not pretend to do the rest. A browser shows an extension only the entry and final URL of a redirect chain, there is no offline threat database, and history is deliberately not kept.
sniffQR for Android and iPhone are next.