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QR Code API for Developers

Create PNG QR codes from text/URLs, generate WiFi and vCard payloads, and decode QR images. Responses for generators are image/png binaries with sensible Content-Disposition filenames.

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Features

What this API actually supports in production today.

  • POST /v1/tools/qr-codes — content → PNG
  • WiFi QR and vCard QR helpers
  • QR read from uploaded image
  • About 1 credit per operation
  • Browser tools for no-code use

Common use cases

  • Ticket and event check-in codes
  • WiFi onboarding posters
  • Contact sharing via vCard QR
  • Decode user-uploaded QR images

API endpoints

Base URL https://thefatbaby.com/api. Authenticate with Authorization: Bearer fb_live_YOUR_KEY.

MethodPathSummaryCredits
POST/v1/tools/qr-codesGenerate QR PNG1 credit
POST/v1/tools/qr-readDecode QR image1 credit
POST/v1/tools/qr-wifiWiFi login QR1 credit
POST/v1/tools/qr-vcardvCard QR1 credit

Examples

Primary endpoint /v1/tools/qr-codes · 1 credit per generate/read (default)

cURL

curl -X POST https://thefatbaby.com/api/v1/tools/qr-codes \
  -H "Authorization: Bearer fb_live_YOUR_KEY" \
  -H "Content-Type: application/json" \
  -d '{"content":"https://thefatbaby.com"}' \
  --output qrcode.png

JavaScript

const res = await fetch('https://thefatbaby.com/api/v1/tools/qr-codes', {
  method: 'POST',
  headers: {
    Authorization: 'Bearer fb_live_YOUR_KEY',
    'Content-Type': 'application/json'
  },
  body: JSON.stringify({ content: 'https://thefatbaby.com' })
});
const blob = await res.blob();

Python

import requests
r = requests.post(
  'https://thefatbaby.com/api/v1/tools/qr-codes',
  headers={'Authorization': 'Bearer fb_live_YOUR_KEY'},
  json={'content': 'https://thefatbaby.com'},
)
open('qrcode.png','wb').write(r.content)

Request

{ "content": "https://thefatbaby.com" }

Binary response: image/png with filename qrcode.png

Pricing & credits

1 credit per QR generate or read by default.

View pricingStart free

Common errors

  • 400 — Missing content/text
  • 402 — insufficient_credits

FAQ

Payment / EMV QR standards?

This API generates/decodes generic QR payloads (text, URL, WiFi, vCard). It is not a payments-network QR certification product.

Try without code

Use the matching online tool, then automate the same workflow with this API.

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