API Documentation

Generate QR codes as PNG or SVG via a simple REST API. Custom colors, sizes, and formats.

Authentication

Include your API key in the X-Api-Key header.

X-Api-Key: sk_live_your_api_key

Endpoint

POST https://qr.kolni.dev/api/generate

Request Body

Field	Type	Required	Description
`text`	string	Yes	Text/URL to encode

Examples

curl
JavaScript
Python
curl -X POST https://qr.kolni.dev/api/generate \
  -H "X-Api-Key: sk_live_your_key" \
  -d '{"text":"https://example.com"}'
const res = await fetch("https://qr.kolni.dev/api/generate", {
  method: "POST",
  headers: {"X-Api-Key":"sk_live_your_key","Content-Type":"application/json"},
  body: JSON.stringify({text:"https://example.com"})
});
import requests
res = requests.post("https://qr.kolni.dev/api/generate",
  headers={"X-Api-Key":"sk_live_your_key"},
  json={"text":"https://example.com"})

Response

Returns QR code image (PNG or SVG).

Header	Value
`Cache-Control`	public, max-age=86400
`X-RateLimit-Remaining`	Requests remaining this minute

Pricing

Free

500 req/mo

$9/mo

5,000 req/mo

$29/mo

50,000 req/mo