Canonical module for prestashop, avoid duplicate content in the search engines.
Module for Prestashop 1.6 y 1.7 of hreflang tags. With option to add default language and deal with pagination
Module for Prestashop 1.6 and 1.7 of Link Obfuscating. It is used to obfuscate your links to improve your SEO with the technic of LINK SCULPTING.