QR Code Generator

About QR Code Generator

The Glutool QR Code Generator creates scannable QR codes from text, URLs, email addresses, phone numbers, Wi-Fi credentials, vCards, and more. Customize colors, size, error correction levels, and module design to match your brand or use case — all generated instantly in your browser with a live preview that updates as you type.

What Are QR Codes?

QR (Quick Response) codes are two-dimensional barcodes that store data in a grid of black and white squares. Invented in 1994 by Denso Wave for automotive manufacturing, QR codes are now used everywhere — from restaurant menus and business cards to boarding passes and payment systems. Any smartphone camera can scan a QR code to instantly open a URL, connect to Wi-Fi, save a contact, or display text. Their ability to store up to 4,296 alphanumeric characters makes them versatile for dozens of applications.

Supported Data Types

• URLs — link to websites, landing pages, social media profiles, app store listings, or online menus.
• Plain text — encode messages, instructions, serial numbers, or any free-form text content.
• Email — pre-fill recipient address, subject line, and body text for one-scan email composition.
• Phone / SMS — encode phone numbers for instant dialing or pre-composed SMS messages.
• Wi-Fi credentials — encode SSID, password, and encryption type so guests connect with a single scan.
• vCard contacts — encode name, phone, email, company, and address for one-scan contact saving.
• Geo location — encode latitude and longitude coordinates that open in the user's maps app.

Customization Options

• Colors — adjust foreground and background colors to match your brand identity while maintaining scan readability.
• Module size — control the size of individual squares and the overall QR code dimensions.
• Quiet zone — configure the white border around the code to ensure reliable scanning in print.
• Error correction — choose from Low (7%), Medium (15%), Quartile (25%), or High (30%) redundancy levels.

Step-by-Step Guide

1. Select data type — choose the type of content you want to encode (URL, text, Wi-Fi, vCard, etc.).
2. Enter content — fill in the input fields with your data. The live preview shows the QR code updating in real-time.
3. Customize design — adjust colors, size, and error correction level to suit your branding or print requirements.
4. Generate — click Generate to create the final QR code.
5. Download — save the QR code as a PNG for digital use or SVG for high-quality print applications.

Real-World Applications

• Adding website URL QR codes to business cards, brochures, flyers, and product packaging for easy access.
• Creating Wi-Fi login QR codes for offices, hotels, cafes, or events so guests connect without typing passwords.
• Encoding vCard contact details for networking events, conference badges, and trade show materials.
• Placing QR codes on restaurant tables linking to digital menus, ordering systems, or review pages.
• Generating QR codes for mobile payment links, donation pages, or event registration forms.

Best Practices for QR Codes

Keep URLs short for smaller, easier-to-scan QR codes — use URL shorteners if needed. Maintain high contrast between foreground and background colors (dark on light is best). Always test the QR code with multiple devices before printing. Use Medium or High error correction if the code will be printed on surfaces that may get scratched, dirty, or partially covered. Include a clear call-to-action near the QR code (e.g., "Scan to visit our website") so users know what to expect.