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HTML 

              
                <!DOCTYPE html>
<html>
<head>
	<title>Generador de Banners para Canva</title>
	<meta charset="UTF-8">
	<meta name="viewport" content="width=device-width, initial-scale=1.0">
	<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.3.1/css/bootstrap.min.css">
</head>
<body>
	<div class="container">
		<h1 class="my-4">Generador de Banners para Canva</h1>
		<div class="form-group">
			<label for="tamano">Seleccione el tamaño del banner:</label>
			<select id="tamano" class="form-control">
				<option value="300x250">Google ADS genérico 300x250</option>
				<option value="250x250">Google ADS genérico 250x250</option>
				<option value="200x200">Google ADS genérico 200x200</option>
        <option value="320x50">Google ADS Móvil 320x50</option>
				<option value="160x600">Google ADS Móvil 160x600</option>
				<option value="300x600">Google ADS Móvil 300x600</option>
				<option value="336x280">Google ADS Móvil 336x280</option>
				<option value="468x60">Google ADS Móvil 468x60</option>
				<option value="120x600">Google ADS Móvil 120x600</option>
        <option value="300x300">Google ADS Automático 300x300</option>
				<option value="600x314">Google ADS Automático 600x314</option>
			</select>
		</div>
		<div class="form-group">
			<label for="titulo">Introduzca el título del diseño:</label>
			<input type="text" id="titulo" class="form-control" placeholder="Introduzca el título aquí">
		</div>
		<button onclick="generarEnlace()" class="btn btn-primary">Generar enlace</button>
    <button onclick="generarTodosLosEnlaces()" class="btn btn-secondary">Generar todos los enlaces</button>
		<p id="resultado" class="mt-3"></p>
    <p id="resultado-todos" class="mt-3"></p>
	</div>

	<script>
		function generarEnlace() {
			var tamano = document.getElementById("tamano").value;
			var width = tamano.split("x")[0];
			var height = tamano.split("x")[1];
			var titulo = document.getElementById("titulo").value;
			var url = "https://www.canva.com/design?create&width=" + width + "&height=" + height + "&title=" + encodeURIComponent(titulo);

			document.getElementById("resultado").innerHTML = "<a href='" + url + "' target='_blank'>Enlace para el diseño</a>";
		}
    
    
    function generarTodosLosEnlaces() {
  var titulo = document.getElementById("titulo").value;
  var tamanoSelect = document.getElementById("tamano");
  var tamanoOptions = tamanoSelect.options;
  var urls = "";

  for (var i = 0; i < tamanoOptions.length; i++) {
    var tamano = tamanoOptions[i].value;
    var width = tamano.split("x")[0];
    var height = tamano.split("x")[1];
    var url = "https://www.canva.com/design?create&width=" + width + "&height=" + height + "&title=" + encodeURIComponent(titulo);
    urls += "<a href='" + url + "' target='_blank'>Enlace para " + tamano + "</a><br/>";
  }

  document.getElementById("resultado-todos").innerHTML = urls;
}
	</script>
</body>
</html>
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