Vale no entiendo nada
Si alguien me explica un poxo plis
Saludos
simplemente se pasa de binario a una encriptaion en base64
mira este icono es asi
en base64 seria asi
AAABAAEAEBAAAAEAGABoAwAAFgAAACgAAAAQAAAAIAAAAAEAGAAAAAAAAAMAAAAAAAAAAAAAAAAAAAAAAACxjFSVYxuPXBGQXg%2BUYg%2BYZg%2Bcag%2Bgbw%2BicQ%2BhcQ%2BebA%2BaaA%2BVZA%2BSYA%2BTYROfcSmRXhWGUw6BTgmCUAeHVQaMWgaQXwaWZAaYaAaXZgaTYgaOXAaJVwaFUweGVAqNWhGLWBN%2BSwp3RQR4RgJ9TAGDUQGIVwGMWwGOXQGNXAGKWQGFVAGATgF8SgJ9SwaGUw2JVhJ6Rwl1QgZ2RAR5SAF%2FTgOCUQGGVgSHVwOGVQGGVgaEVAh9TAR3RQF5RgSCTwyJVhF5Rwuhf1i0m3mGWh%2FFsJCKXhvCq4arilaZcTLSwaXl28y9pIKAUhh1QwWATQyJVhF5RguffVjn3tSnh2L07%2BqniFvo39Sylmvk2crazbmtj2fo4NbGspl2RAt%2BSwyJVhF4RguNZjvq5d%2Fg18zt6ePWybjq5N21mnfx7OaefFB7TRSmh2Pr5N5%2FUR9%2BSwyPXx6KXyySbUTr5uHv7erArJbt6%2Bni29Oxlnby7umfflmGWy2oi2zw6%2BaUb0aIWR%2BngU2adEiWckvo39jp4tulhmft6OPWybylh2jw6uW9qJGbeVfKuKbr5N2ad1Ged0mwjmClg1uefVrOvq7FsZ6efl7Zy77EsZ2dfVzDr5vy7Oju6eTx7ei7pI2gflqohVy6nHSwkm%2Bpi2yskHWrjnOmiGutkXWrj3KmiGupi2%2B1nIS7ppCzmoGoi26rjWyylG%2FEqoi7ooS1m4GymX%2BymX%2BymX%2BymX%2BymX%2BymX%2BymX%2BymX%2BymX%2BymX%2BzmYC3nYG9o4LOuJvHsZfBrJW%2FqZS%2FqZO%2FqZO%2FqZO%2FqZO%2FqZO%2FqZO%2FqZO%2FqZO%2FqZO%2FqpTDrZXIspbXxKrUw6zQvqrOvKrOvKnOvKnOvKnOvKnOvKnOvKnOvKnOvKnOvKnOvarRwKvUwqrOtZHg0r7d0L%2Fcz77czr7czr7czr7czr7czr7czr7czr7czr7czr7cz77e0b%2FdzLUAAADcyq3cyqvbyKvbyKvbyKvbyKvbyKvbyKvbyKvbyKvbyKvbyKvcyavdy6zb0sQAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAACAAAAA
para ver el icono con firefox
data:image/x-icon;base64,AAABAAEAEBAAAAEAGABoAwAAFgAAACgAAAAQAAAAIAAAAAEAGAAAAAAAAAMAAAAAAAAAAAAAAAAAAAAAAACxjFSVYxuPXBGQXg%2BUYg%2BYZg%2Bcag%2Bgbw%2BicQ%2BhcQ%2BebA%2BaaA%2BVZA%2BSYA%2BTYROfcSmRXhWGUw6BTgmCUAeHVQaMWgaQXwaWZAaYaAaXZgaTYgaOXAaJVwaFUweGVAqNWhGLWBN%2BSwp3RQR4RgJ9TAGDUQGIVwGMWwGOXQGNXAGKWQGFVAGATgF8SgJ9SwaGUw2JVhJ6Rwl1QgZ2RAR5SAF%2FTgOCUQGGVgSHVwOGVQGGVgaEVAh9TAR3RQF5RgSCTwyJVhF5Rwuhf1i0m3mGWh%2FFsJCKXhvCq4arilaZcTLSwaXl28y9pIKAUhh1QwWATQyJVhF5RguffVjn3tSnh2L07%2BqniFvo39Sylmvk2crazbmtj2fo4NbGspl2RAt%2BSwyJVhF4RguNZjvq5d%2Fg18zt6ePWybjq5N21mnfx7OaefFB7TRSmh2Pr5N5%2FUR9%2BSwyPXx6KXyySbUTr5uHv7erArJbt6%2Bni29Oxlnby7umfflmGWy2oi2zw6%2BaUb0aIWR%2BngU2adEiWckvo39jp4tulhmft6OPWybylh2jw6uW9qJGbeVfKuKbr5N2ad1Ged0mwjmClg1uefVrOvq7FsZ6efl7Zy77EsZ2dfVzDr5vy7Oju6eTx7ei7pI2gflqohVy6nHSwkm%2Bpi2yskHWrjnOmiGutkXWrj3KmiGupi2%2B1nIS7ppCzmoGoi26rjWyylG%2FEqoi7ooS1m4GymX%2BymX%2BymX%2BymX%2BymX%2BymX%2BymX%2BymX%2BymX%2BymX%2BzmYC3nYG9o4LOuJvHsZfBrJW%2FqZS%2FqZO%2FqZO%2FqZO%2FqZO%2FqZO%2FqZO%2FqZO%2FqZO%2FqZO%2FqpTDrZXIspbXxKrUw6zQvqrOvKrOvKnOvKnOvKnOvKnOvKnOvKnOvKnOvKnOvKnOvarRwKvUwqrOtZHg0r7d0L%2Fcz77czr7czr7czr7czr7czr7czr7czr7czr7czr7cz77e0b%2FdzLUAAADcyq3cyqvbyKvbyKvbyKvbyKvbyKvbyKvbyKvbyKvbyKvbyKvcyavdy6zb0sQAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAACAAAAA
en teoria se pone en base64 para no adjuntar el icono como otro archivo.