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QR Code Generator

Create custom QR codes for any URL or text

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Static vs Dynamic QR codes — why the difference matters

Before generating a QR code, it's worth understanding the two fundamental architectures:

Static QR codes encode your target data (URL, text, credentials) directly into the black-and-white module grid. There is no intermediate server. When someone scans the code, their phone reads the data from the pixels and opens the URL directly. The code works forever.

Dynamic QR codes encode a short redirect URL pointing to the QR provider's servers. When scanned, the provider's server redirects the user to the actual destination. This lets you change the destination after printing — but if the provider goes offline, raises prices, or shuts down, every code you've ever printed stops working instantly.

This tool generates static codes only, using the qrcode.js library (davidshimjs fork) in your browser. Your data never touches a redirect server.

What you can encode in a QR code

Website URL:

`

https://example.com/your-page

`

Wi-Fi network (iOS 11+ and Android 10+ auto-connect on scan):

`

WIFI:S:MyNetworkName;T:WPA;P:MyPassword;;

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Plain text message (appears directly on screen when scanned):

`

Table 12 — scan to view our digital menu

`

vCard contact (saves to phone address book):

`

BEGIN:VCARD

VERSION:3.0

FN:Jeeva

ORG:PDFBucket

EMAIL:support@pdfbucket.online

END:VCARD

`

Printing guidelines for reliable scans

    1. Minimum size: 2 cm × 2 cm for smartphone scanning at arm's length. Use 10 cm × 10 cm for outdoor signage.

    2. High contrast: Black modules on white background scans most reliably. Avoid light colours or low-contrast combinations.
    3. Quiet zone: Keep 4 module-widths of clear space around all four edges. Scanners need this border to locate the code.
    4. Test before printing: Scan your generated code with multiple apps (built-in camera, Google Lens, and a third-party scanner) before ordering physical prints.
💬 FAQ

FAQs about QR Code Generator

Everything you might be wondering — answered.

What library powers the QR code generation?+
The tool uses qrcode.js (the davidshimjs fork), a pure JavaScript QR code encoder that implements the QR Code ISO/IEC 18004 standard. It handles data encoding, error correction level selection (we use Level M by default — 15% data restoration), and module placement entirely in the browser.
Do these QR codes expire?+
Static QR codes never expire on their own. The data is baked into the pixel grid. As long as the destination URL or content exists, the code will scan correctly — in 10 years as easily as today.
Can I encode Wi-Fi credentials?+
Yes. Use the format: WIFI:S:NetworkName;T:WPA;P:YourPassword;; — when scanned, modern iOS and Android devices automatically prompt to join the network.
What is the minimum print size for reliable scanning?+
2 cm × 2 cm (about 0.8 inches square) is the generally accepted minimum for smartphone cameras at arm's length. For outdoor signage or distance scanning, 10 cm × 10 cm or larger is recommended.