QR Code Generation

Generate customisable QR codes for your biolinks or any URL.

Overview

The API provides two ways to generate QR codes:

Biolink QR codes - Generate QR codes for your existing biolinks
Custom URL QR codes - Generate QR codes for any URL

Biolink QR Codes

Get QR code data for an existing biolink:

cURL

curl --request GET \
  --url 'https://api.lthn.ai/api/v1/bio/1/qr' \
  --header 'Authorization: Bearer YOUR_API_KEY'

Response:

{
  "data": {
    "svg": "<svg>...</svg>",
    "url": "https://example.com/mypage"
  }
}

Custom URL QR Codes

Generate a QR code for any URL:

cURL

curl --request POST \
  --url 'https://api.lthn.ai/api/v1/qr/generate' \
  --header 'Authorization: Bearer YOUR_API_KEY' \
  --header 'Content-Type: application/json' \
  --data '{
    "url": "https://example.com",
    "format": "svg",
    "size": 300
  }'

Customisation Options

Available customisation parameters:

Parameter	Type	Description
`format`	string	Output format: `svg` or `png`
`size`	integer	Size in pixels (100-2000)
`color`	string	Foreground colour (hex)
`background`	string	Background colour (hex)

Download Formats

Download QR codes directly as image files:

cURL

curl --request GET \
  --url 'https://api.lthn.ai/api/v1/bio/1/qr/download?format=png&size=500' \
  --header 'Authorization: Bearer YOUR_API_KEY' \
  --output qrcode.png

The response is binary image data with appropriate Content-Type header.

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