Skip to content
thai-qr-payment

Livedemo

Every wire format, every option — playground for the full public API. Runs in your browser.

The demo below imports thai-qr-payment straight from this site’s bundle and renders the SVG on every keystroke. Drop a PromptPay phone number into the form, set an amount, and scan with your banking app.

Merchant info
Additional data
VAT TQRC (Thai e-tax receipt)
Tip policy
Acme Coffee฿ 50.00
↓ SVG
EMVCo wire payload (98 chars)00020101021229370016A000000677010111011300668123456785303764540550.005802TH5911Acme Coffee63048A44
Parsed
{
  "payloadFormat": "01",
  "pointOfInitiation": "dynamic",
  "merchant": {
    "kind": "promptpay",
    "recipientType": "mobile",
    "recipient": "0812345678"
  },
  "amount": 50,
  "currency": "764",
  "country": "TH",
  "merchantName": "Acme Coffee",
  "crc": {
    "value": "8A44",
    "valid": true,
    "truncated": false
  },
  "rawTags": [
    {
      "tag": "00",
      "value": "01"
    },
    {
      "tag": "01",
      "value": "12"
    },
    {
      "tag": "29",
      "value": "0016A00000067701011101130066812345678"
    },
    {
      "tag": "53",
      "value": "764"
    },
    {
      "tag": "54",
      "value": "50.00"
    },
    {
      "tag": "58",
      "value": "TH"
    },
    {
      "tag": "59",
      "value": "Acme Coffee"
    },
    {
      "tag": "63",
      "value": "8A44"
    }
  ]
}

What just happened

Section titled “What just happened”
  1. payloadFor() built the EMVCo MPM wire string from your inputs
  2. parsePayload() round-tripped it to verify the CRC + decode the merchant template
  3. encodeQR() ran ISO/IEC 18004 Reed-Solomon ECC + mask selection
  4. renderThaiQRPayment() composed the final SVG (card mode) or renderThaiQRPaymentMatrix() emitted just the QR matrix

Every step ran client-side. No network call, no server. Same code-path a production app takes.

Known limitations of the demo

Section titled “Known limitations of the demo”
  • The dummy phone 0812345678 is not a real PromptPay account — your banking app will scan it correctly but reject the recipient at the “confirm” step.
  • The card mode embeds the Thai QR Payment + PromptPay marks. Production apps must comply with the official brand guidelines when using these logos.