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QR Code FAQ: Expiration, Privacy and Downloads
What to know before you make, print, and share a code.
Do static QR codes expire?
The data encoded in a static QR does not have a built-in expiry. Websites, domains, and network credentials can change or stop working.
Can I change a QR code after printing?
A static QR contains fixed data. To change it, create a new code and replace the printed one. This tool does not create hosted redirect links.
Is everything free?
The Link, Text, and Wi-Fi generators and PNG/SVG downloads are free. No account is required by the generator. The generator is open to everyone without signing in.
What happens to my data?
Generation happens in your browser. Entered URLs, text, and passwords are not sent to the generator’s server, saved in browser storage, or included in analytics. Normal requests for the website still reach the hosting service.
Can someone read a Wi-Fi password from its QR?
Yes. A Wi-Fi QR contains the credentials; it does not encrypt them. Share it only with people you trust. The password is cleared when you leave Wi-Fi mode.
Which Wi-Fi networks work?
Personal WPA/WPA2, older WEP, and open networks use the common Wi-Fi QR convention. Support varies by phone. Enterprise networks and WPA3-only compatibility are not promised. Test the result on your target devices.
PNG or SVG?
PNG is convenient for sharing or inserting in a document. Choose 1024 or 2048 pixels for more resolution. SVG is a vector image that scales cleanly for print. Both include a white quiet zone.
How are website addresses handled?
Explicit HTTP and HTTPS addresses are preserved, including path, query, and fragment. A bare domain is visibly prefixed with https://. Unicode URLs use the browser URL parser’s ASCII domain and percent-encoding; the exact encoded address is shown when normalization occurs. Addresses are never fetched or safety-checked.
Can I use the output commercially?
The tool imposes no restriction on the QR images you create. The QR encoder uses the MIT license; included third-party notices accompany the source. You remain responsible for the destination, the content you encode, and any third-party rights.
How can I check that a code scans?
Keep the white border intact. Test the actual downloaded file, then the finished print, at its intended size with multiple phones and realistic lighting. Dense codes need more physical space. No generator can promise every scan will work.