For documents like PDFs, there’s no way to position canonical tags while in the web page header since there isn't any webpage section. In these kinds of conditions, you’ll need to use HTTP headers to established canonicals. Al enviar este formulario, acepto que PrestaShop S.A utilice los datos que he https://nanobookmarking.com/story18696470/the-etiquetas-autom%C3%A1ticas-hreflang-canonical-etiquetas-seo-diaries