Free QR Code Generator – WiFi, vCard, Product & Menu QR Codes

The Ultimate QR Code Resource

∞ Your QR codes never expire. Unlike subscription-based QR generators that deactivate codes after 7, 30, or 90 days, Centrigon QR Forge creates permanent, static QR codes. Once generated and downloaded, your code works forever — no renewal fees, no account required, no tracking. The data is embedded directly into the QR pattern; it doesn't rely on our servers. Print it today, scan it in 10 years.

Centrigon QR Forge is a professional-grade QR code workstation supporting 20+ data formats, including dedicated product and menu QR codes. Unlike other tools, everything runs locally — your sensitive WiFi passwords, contact details, product information, and crypto addresses never leave your device. Generate, customize with logos and colors, and export high-resolution PNGs for print or digital use.

Product & Menu QR Codes — How They Work

Restaurants, retailers, and product manufacturers: Use the Product/Menu QR type to encode detailed product information, pricing, descriptions, and links. When scanned, customers see your product page, menu item, or digital catalog. Perfect for:

• Restaurant digital menus (no-touch, updatable via your website)
• Product packaging (specs, manuals, warranty info)
• Retail price tags (link to product details)
• Museum exhibits (artwork information)
• Real estate listings (property details and virtual tours)

Pro tip: Pair with a URL shortener that you control — update the destination anytime without changing the printed QR code.

Complete Format Guide with Examples

https://yourmenu.com/dish-name

Product / Menu Item — Link directly to your product page, menu item, or digital catalog. Update your website content anytime without reprinting QR codes.

WIFI:S:MyNet;T:WPA;P:pass;;

WiFi Network — S: SSID (network name), T: encryption type (WPA/WEP/nopass), P: password. Scan to connect instantly without typing.

BEGIN:VCARD\nFN:John Doe\nTEL:+1234567890\nEMAIL:john@email.com\nEND:VCARD

vCard Contact — Saves directly to phone contacts. Includes name, phone, email, company, address, and more fields.

mailto:user@example.com?subject=Hello&body=Message

Email — Pre-fills recipient, subject, and body. Opens in mail app.

smsto:+1234567890:Hello there

SMS / Text Message — Pre-fills phone number and message content.

tel:+1234567890

Phone Call — Prompts to call the number when scanned.

geo:40.7128,-74.0060

Geolocation — Latitude first (40.7128° N), longitude second (-74.0060° W). Opens maps app at exact coordinates.

BEGIN:VEVENT\nSUMMARY:Meeting\nDTSTART:20251210T090000\nDTEND:20251210T100000\nEND:VEVENT

Calendar Event — Adds event to calendar. Format: YYYYMMDDTHHMMSS (year-month-day T hour-minute-second).

bitcoin:1A1zP1eP5QGefi2DMPTfTL5SLmv7DivfNa?amount=0.01

Crypto Payment — Bitcoin, Ethereum, or other currencies. Address followed by optional amount.

https://wa.me/1234567890

WhatsApp — Opens chat with the number (international format, no plus sign or spaces).

https://t.me/username

Telegram — Opens Telegram chat with the username.

https://instagram.com/username

Social Media — Direct profile link for Instagram, Twitter, Facebook, LinkedIn, or TikTok.

https://apps.apple.com/app/id123456789

App Store / Google Play — Direct link to download your app from the store.

Professional Features

✓ Permanent codes — never expire, no subscription, no hidden fees
✓ Product & Menu QR — dedicated support for restaurants, retail, and product information
✓ Logo integration — upload any image from your device or use a URL (use H error correction for best results)
✓ Error correction up to 30% — ensures scannability even with logos or damage
✓ All major QR types — from simple URLs to complex vCards and calendar invites
✓ Privacy-first architecture — zero server uploads, zero tracking
✓ High-res PNG export — perfect for posters, business cards, and product packaging

How QR Codes Work

QR (Quick Response) codes encode data in a grid of black and white modules. Three position markers allow scanners to detect orientation. Error correction (Reed-Solomon) enables up to 30% of the code to be damaged or covered while remaining readable — which is why logos can be placed in the center without breaking functionality.

Best Practices for Scannability

• Maintain high contrast (dark on light) — avoid red/blue combinations that cameras struggle with
• For print, minimum size of 2cm × 2cm (0.8 inches)
• Leave quiet zone (white margin) around the code
• Test with multiple devices and lighting conditions before mass production