shlink/docs/swagger/paths/{shortCode}_track.json

{
    "get": {
        "operationId": "trackShortUrl",
        "tags": [
            "URL Shortener"
        ],
        "summary": "Short URL tracking pixel",
        "description": "Generates a 1px transparent image which can be used to track emails with a short URL",
        "parameters": [
            {
                "name": "shortCode",
                "in": "path",
                "description": "The short code to resolve.",
                "required": true,
                "schema": {
                    "type": "string"
                }
            }
        ],
        "responses": {
            "200": {
                "description": "Image in GIF format",
                "content": {
                    "image/gif": {
                        "schema": {
                            "type": "string",
                            "format": "binary"
                        }
                    }
                }
            }
        }
    }
}