Hub

QR Code Use Cases

How businesses, developers, and individuals use QR codes in the real world.

Restaurants & Cafes

QR Code Menus Replace printed menus with scannable QR codes. Update your menu anytime without reprinting. Save thousands per year. WiFi for Cafes & Coworking Stop spelling your WiFi password. Scan-to-connect QR codes save staff time and impress customers. Google Review QR Code Generator Turn your Google Business Profile review link into a free, print-ready QR code for checkout counters, receipts, and table cards.

Retail & Small Business

UPI Payments for Shops Accept Google Pay, PhonePe, Paytm payments. No terminal, no fees. Print a QR code and start accepting payments today. UPI गाइड (हिंदी में) दुकान के लिए UPI QR Code कैसे बनाएं — बिल्कुल फ्री, हिंदी में पूरी गाइड। WhatsApp for Business Let customers message you instantly. Print on packaging, receipts, or storefronts. Pre-fill greeting messages.

Events & Networking

Event Check-In Paperless check-in for conferences, weddings, and workshops. Unique QR codes per attendee. Business Cards Add a vCard QR to your business card. One scan saves your full contact info — name, phone, email, company, website. Calendar Events One scan adds your event to any calendar. Encode date, time, location, and description.

Developers & AI Agents

Free QR Code API Generate QR codes with a single HTTP request. No auth, no signup. PNG, SVG, JSON output. CORS enabled. LLM & AI Agent Integration Give AI agents QR code abilities. Function calling schemas, MCP server, system prompts. How LLMs Generate QR Codes ChatGPT, Claude, and other AI models can generate QR codes using the QRGen API and tools. Python Integration Generate QR codes with the requests library. Batch generation, WiFi, UPI, Flask integration. Node.js Integration Native fetch, zero dependencies. Express middleware, TypeScript types, batch generation. n8n Workflows HTTP Request node integration. Auto-generate QR codes from triggers and webhooks. Zapier Integration Generate QR codes in any Zap. Direct image URLs or Webhooks by Zapier. Claude Code Bash tool usage, MCP server config, and example flows for Anthropic's CLI. OpenAI Codex Custom GPT actions, Assistants API, function calling examples.
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