QR Code Generator API

A simple HTTP API that generates QR codes for payment information based on SEPA (Single Euro Payments Area) standards.

• ✅ Generates SVG QR codes for payment information
• ✅ Supports SEPA payment format
• ✅ URL parameter-based API
• ✅ Built-in validation and error handling
• ✅ Help documentation endpoint
• ✅ Caching headers for performance

Generates a QR code based on the provided parameters.

Required Parameters:

• name - Recipient name
• iban - Bank account IBAN

Optional Parameters:

• bic - Bank Identifier Code
• amount - Payment amount (e.g., 100.50)
• reference - Payment reference/description

Response: SVG image containing the QR code

Example:

/?name=John%20Doe&iban=DE89370400440532013000&bic=COBADEFFXXX&amount=100.50&reference=Invoice123

Returns HTML documentation for the API.

Health check endpoint that returns service status.

/?name=John%20Doe&iban=DE89370400440532013000

/?name=Acme%20Corp&iban=DE89370400440532013000&bic=COBADEFFXXX&amount=250.75&reference=Invoice%20INV-2024-001

/?name=Test%20User&iban=DE89370400440532013000&amount=50.00&reference=Test%20Payment

The generated QR codes follow the SEPA QR Code standard (EPC QR Code) which includes:

• Service Tag: BCD
• Version: 002
• Character Set: UTF-8
• Identification: SCT (SEPA Credit Transfer)
• Beneficiary details (BIC, Name, IBAN)
• Amount in EUR
• Payment reference

• Framework: Hono
• QR Code Library: qrcode@1.5.3
• Output Format: SVG (scalable, lightweight)
• Error Correction Level: Medium (M)
• Image Size: 300x300px
• Caching: 1 hour cache headers

The API returns appropriate HTTP status codes:

• 200 - Success (QR code generated)
• 400 - Bad Request (missing required parameters)
• 500 - Internal Server Error (QR code generation failed)

• No sensitive data is stored
• All parameters are validated
• CORS enabled for cross-origin requests
• Rate limiting applied by Val Town platform

This app is deployed on Val Town as an HTTP val. The main entry point is /index.ts with HTTP trigger enabled.