Free tool · runs in your browser
Check a QR code before you print — or scan.
Spots unsafe destinations and scannability problems. Your image never leaves your device.
Drop a QR image here
Drag and drop your QR code image here, or browse files
PNG, JPG or GIF up to 10 MB
REPORT · EXAMPLE
1 WARNING→ https://[decoded-destination].com/menu
THREAT & REDIRECT
SCANNABILITY
Tip: leave a quiet zone of at least four modules around the code so phones can find its edges.
Comprehensive scan security & performance auditing
Threat & redirect defense
Detect malicious redirects, suspicious hidden domains, and credential harvesting attempts. Verify the target SSL safety configuration instantly.
- Malicious URL path analysis
- HTTPS certificate check
- Hidden redirect hops checker
Scannability & resolution
Analyze pixel contrast, resolution, and margin spacing metrics to ensure your printed campaigns scan perfectly on both high-end and older device cameras.
- Contrast module ratio audit
- Resolution quality assessment
- Quiet zone margin validation
Actionable diagnostic reports
Get detailed performance feedback instantly without creating an account. Diagnose code problems and obtain simple instructions to optimize scanning reliability.
- Browser-local scanning execution
- Real-time status trackers
- Actionable design tips
Ideal for every QR scenario
Business owners
Verify QR images before printing large batches of marketing pamphlets, packaging, or product labels.
Security teams
Inspect suspicious vector or print QRs for underlying redirects, typosquatting domains, or malware.
Digital marketers
Optimize code spacing, increase device-level scanning rates, and test quiet zones to boost conversions.
Everyday consumers
Stay protected by checking physical poster codes or mail codes before scanning them directly on your phone.
Security advisory
QR code phishing (quishing): how to verify and scan QR codes safely
QR codes are everywhere, but so are QR scammers. Learn how to verify destinations, spot malicious stickers, and protect your digital devices from phishing codes.
Read security guide →Validator FAQ
Is my image uploaded anywhere?
No. Decoding and analysis happen in your browser; the image stays on your device.
What threats does it catch?
Unencrypted HTTP, known phishing and look-alike domains (like g00gle.com), subdomain abuse, non-standard ports and hidden redirects.
Does it work with other generators?
Yes — any standard QR code from any tool.
How does the QR code validator work?
Upload any QR code image and our validator will instantly analyze it for security threats, performance issues, and scannability. We check for malicious URLs, verify HTTPS protection, analyze image quality, and provide actionable recommendations.
Is the QR code validator really free?
Yes! Our QR code validator is completely free to use with no signup required. You can analyze unlimited QR codes for security and performance issues.
What image formats are supported?
We support all common image formats including PNG, JPG, JPEG, and GIF. Images must be under 10MB in size.
How accurate is the security analysis?
Our security analysis uses advanced pattern matching and threat detection algorithms. While highly accurate, we recommend always exercising caution with unfamiliar QR codes and verifying destinations manually.