Common use cases
- Print proof
- Test the final asset before printing labels, posters or brochures.
- URL review
- Check HTTPS and the full hostname before opening a link.
- Product QA
- Verify a QR image exported by an application or generator.
Utilities · free tool
QR code tester and URL safety check
Test whether a QR code decodes and inspect URL security signals before printing or opening it.
Your tool
QR Code Tester
- Choose files
- Analyze
- Review result
Images and camera frames are decoded locally in your browser.
Scan a QR code
Use a clear PNG, JPG, WebP or camera view. Nothing is uploaded.
PNG · JPG · WebP · GIF
Drop your file hereor
PNG, JPG, WebP or GIF · 20 MB maximum
No file selected
Camera access starts only after you choose this option.
Decoded result
Select an image or start the camera to inspect a QR code.
Use it well
How to use QR Code Tester
Steps
- Import the exact final image.
- Confirm that the payload decodes.
- Review content type, hostname and warnings.
- Also test the physical output at its intended size and distance.
Limits and good practices
Good practices
- Use realistic test values when validating forms, exports or API payloads.
- Keep real customer, banking and production secrets out of public tools.
- Check the output format before copying it into a production workflow.
- Document whether a value is generated, validated, converted or only estimated.
Common mistakes
- Confusing valid format with real-world validity
- A generated or locally validated value can match a format without proving that it exists in an official system.
- Using real production data
- Public utilities are best for test data, demos, fixtures, QA and quick checks, not for confidential values.
FAQ
Frequently asked questions
How can I check whether a QR code works?
Import the final file, confirm the decoded content and also scan a real-size copy in the intended conditions.
Why test before printing?
Resizing, low contrast, a cropped quiet zone or compression can make a previously valid code unreadable.
Does one successful test guarantee every phone can scan it?
No. Important campaigns should also be tested across devices, apps, print materials and scan distances.
Which URL risks are flagged?
The tester flags HTTP, embedded credentials, Punycode, IP hosts, local targets, unusual ports, very long URLs and dangerous schemes.
Does the tester follow redirects?
No. It analyzes the literal QR payload without contacting the destination.