How does the QR Code Generator work?
Choose a content type, enter your data and click “Create QR code”. The code is generated entirely locally in your browser and can be customised and downloaded.
QR Code Generator
With the QR Code Generator you can create QR codes for URLs, text, Wi-Fi access, email, phone numbers and contact details. Processing happens entirely locally in your browser.
Your input and the generated QR code are processed entirely locally in your browser. No content is sent to ToolkitOne or external services.
Content
How SMS prefill behaves can vary by device and operating system.
QR code settings
Higher error correction makes the QR code more robust but needs more space and can produce a denser code for long content.
Size applies to the preview and PNG download. SVG remains scalable.
A sufficient light margin improves QR code readability. At least 4 modules are recommended.
Dark modules on a light background are usually recognised most reliably by scanners.
Result
This QR code was generated locally in your browser.
Understanding and using QR codes
What is a QR code?
A QR code stores information in a two-dimensional pattern. Smartphones and other devices can read it with a camera or scanner app.
QR code for a website URL
A URL QR code can store a web address. When scanned, the user can open the linked page.
Wi-Fi access via QR code
A Wi-Fi QR code can contain network name, encryption and password. Many phones can connect directly after scanning.
QR code as PNG or SVG
PNG works well for websites, documents and everyday use. SVG scales without quality loss and suits print.
Readability
A QR code needs sufficient contrast and a clear margin. Dark modules on a light background are usually scanned most reliably.
Frequently asked questions about the QR Code Generator
Is my input stored?
No. ToolkitOne does not store your input on the server or in cookies, local storage or session storage.
Is content sent to a server?
No. Generation happens entirely locally in your browser. There is no server-side generator endpoint.
Can I create a QR code for a website URL?
Yes. Enter the address with or without https://. Domains without a protocol get https:// added automatically.
Can I create a QR code for Wi-Fi?
Yes. Enter network name, encryption and, for secured networks, the password. Many devices can connect directly afterwards.
Is my Wi-Fi password stored?
No. The password is only used locally to generate the QR code and is neither transmitted nor stored.
Can I create a QR code for email?
Yes. The generator creates a standard mailto: link with optional subject and body fields.
Can I store contact details in a QR code?
Yes. As a contact card, a vCard in VERSION:3.0 format is created, which many devices can read.
What do error correction levels L, M, Q and H mean?
They indicate how much of the QR code can be damaged before it becomes unreadable – roughly 7, 15, 25 or 30 percent. Higher levels are more robust but need more space.
Which QR code size should I use?
512 × 512 pixels suits most digital uses. For print or large display, 1024 pixels can help. SVG scales without quality loss.
Why does a QR code need a margin?
The light margin – also called quiet zone – separates the code from the background and helps scanners detect it reliably.
Can I change the colours of the QR code?
Yes. You can adjust foreground and background colours. Keep enough contrast so the code stays readable.
Why is high contrast important?
Scanners detect dark modules on a light background most reliably. Low contrast makes reading much harder.
What is the difference between PNG and SVG?
PNG is a raster format with fixed pixel size. SVG is vector-based and can be enlarged without becoming blurry.
Do QR codes work forever?
A static QR code embeds the data directly and has no technical expiry date. However, linked content may later be deleted, changed or unreachable.
Can a QR code be changed afterwards?
The content of an already generated static QR code cannot be changed. You need to generate a new QR code.
Can a QR code be dangerous?
A QR code can point to unwanted or harmful content. Users should check which address is shown before opening it.
Why should I test a QR code before publishing?
Testing with your target device or a scanner app shows whether the code is readable and the expected content is applied – especially for Wi-Fi, vCards and long text.