Generate QR Codes with a Free API (PNG & SVG)

#api #qrcode #webdev #tutorial

Generate QR Codes with a Free API (PNG & SVG)

Need QR codes in your app? The QR Code Generator API creates customizable QR codes from any text or URL. Supports PNG and SVG, custom colors, and sizes up to 2000px.

Quick Start

POST (JSON body)

curl -X POST https://qrcode-api-eight.vercel.app/api/generate \
  -H "Content-Type: application/json" \
  -d '{"data": "https://example.com", "size": 400}' \
  --output qrcode.png

GET (query params — perfect for img tags!)

<img src="https://qrcode-api-eight.vercel.app/api/generate?data=https://example.com&size=200" />

Yes, you can use it directly in <img> tags. No JavaScript needed.

Options

Parameter	Type	Default	Description
`data`	string	required	Text or URL to encode
`size`	number	300	Image size in pixels (100-2000)
`format`	string	"png"	png or svg
`errorCorrectionLevel`	string	"M"	L, M, Q, or H
`margin`	number	4	Quiet zone (0-10)
`darkColor`	string	"#000000"	Hex color for dark modules
`lightColor`	string	"#ffffff"	Hex color for light modules

Custom Colors Example

curl -X POST https://qrcode-api-eight.vercel.app/api/generate \
  -H "Content-Type: application/json" \
  -d '{"data": "Hello!", "darkColor": "#1a56db", "lightColor": "#f0f4ff", "size": 500}' \
  --output blue-qr.png

Python Example

import requests

response = requests.post(
    "https://qrcode-api-eight.vercel.app/api/generate",
    json={"data": "https://mysite.com", "format": "svg"},
)

with open("qrcode.svg", "w") as f:
    f.write(response.text)