{* Canonical link *}
{block name='frontend_index_header_canonical'}
    {* Count of available product pages *}
    {$pages = ceil($sNumberArticles / $criteria->getLimit())}

    {if {config name=seoIndexPaginationLinks} && $showListing && $pages > 1}
        {* Previous rel tag *}
        {if $sPage > 1}
            {$sCategoryContent.canonicalParams.sPage = $sPage - 1}
            <link rel="prev" href="{url params = $sCategoryContent.canonicalParams}">
        {/if}

        {* Next rel tag *}
        {if $pages >= $sPage + 1}
            {$sCategoryContent.canonicalParams.sPage = $sPage + 1}
            <link rel="next" href="{url params = $sCategoryContent.canonicalParams}">
        {/if}
    {elseif !{config name=seoIndexPaginationLinks} || !$showListing}
        <link rel="canonical" href="{url params = $sCategoryContent.canonicalParams}" />
    {/if}
{/block}