{"id":29125,"date":"2019-07-18T09:30:52","date_gmt":"2019-07-18T16:30:52","guid":{"rendered":"https:\/\/kinsta.com\/?post_type=knowledgebase&#038;p=6766"},"modified":"2025-10-01T20:52:11","modified_gmt":"2025-10-01T19:52:11","slug":"combine-external-css","status":"publish","type":"post","link":"https:\/\/kinsta.com\/fr\/blog\/combine-external-css\/","title":{"rendered":"Comment combiner le CSS externe dans WordPress"},"content":{"rendered":"<p>Vous voyez l&rsquo;avertissement \u00ab\u00a0Combine external CSS\u00a0\u00bb dans <a href=\"https:\/\/kinsta.com\/fr\/blog\/test-vitesse-pingdom\/\">Pingdom<\/a>, <a href=\"https:\/\/kinsta.com\/fr\/blog\/test-vitesse-gtmetrix\/\">GTmetrix<\/a>, ou <a href=\"https:\/\/kinsta.com\/fr\/blog\/google-pagespeed-insights\/\">Google PageSpeed Insights<\/a> ? Vous n&rsquo;\u00eates pas seul, car il s&rsquo;agit d&rsquo;une erreur tr\u00e8s courante pour de nombreux propri\u00e9taires de sites Web WordPress. Cet avertissement s&rsquo;affiche g\u00e9n\u00e9ralement lorsque vous avez 10 fichiers CSS ou plus charg\u00e9s \u00e0 partir d&rsquo;un CDN et\/ou d&rsquo;un sous-domaine (domaine externe). Un moyen de r\u00e9soudre ce probl\u00e8me est de concat\u00e9ner vos fichiers CSS, ou de les combiner pour qu&rsquo;ils se chargent en une seule requ\u00eate.<\/p>\n<div class=\"warning\" style=\"background: #FFFCE3;padding: 22px;margin-bottom: 22px\">Remarque : Si vous utilisez HTTPS avec un fournisseur qui prend en charge HTTP\/2, cet avertissement peut g\u00e9n\u00e9ralement \u00eatre ignor\u00e9 en toute s\u00e9curit\u00e9. Avec HTTP\/2, plusieurs fichiers CSS peuvent maintenant \u00eatre charg\u00e9s en parall\u00e8le sur une seule connexion.<\/div>\n<figure style=\"width: 1687px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/kinsta.com\/fr\/wp-content\/uploads\/sites\/4\/2016\/09\/avertissement-combine-external.png\" alt=\"Avertissement Combine external CSS dans Pingdom\" width=\"1687\" height=\"406\"><figcaption class=\"wp-caption-text\">Avertissement Combine external CSS dans Pingdom<\/figcaption><\/figure>\n<p>Si vous utilisez toujours HTTP et que vous n&rsquo;avez pas encore migr\u00e9 vers <a href=\"https:\/\/kinsta.com\/fr\/apprendre\/http2\/\">HTTP\/2<\/a>, vous pouvez suivre le tutoriel ci-dessous pour savoir comment combiner des fichiers CSS externes. Encore une fois, la concat\u00e9nation est maintenant une technique qui est g\u00e9n\u00e9ralement consid\u00e9r\u00e9e comme d\u00e9su\u00e8te. <a href=\"http:\/\/caniuse.com\/#search=http2\">Plus de 77% des navigateurs supportent maintenant HTTP\/2<\/a> lorsqu&rsquo;ils fonctionnent sur HTTPS, ainsi que de nombreux fournisseurs de CDN et d&rsquo;h\u00e9bergement web, dont Kinsta. Il est \u00e9galement important de noter que Pingdom ne supporte pas encore HTTP\/2 puisqu&rsquo;il utilise une version plus ancienne de Chrome.<\/p>\n<h2>Combiner le CSS externe dans WordPress<\/h2>\n<p>Le message d&rsquo;avertissement Combine external CSS est g\u00e9n\u00e9ralement affich\u00e9 lorsque vous utilisez un CDN parce que vous h\u00e9bergez vos <a href=\"https:\/\/kinsta.com\/fr\/blog\/css-wordpress\/\">fichiers CSS<\/a> sur un domaine externe, tel que cdn.domaine.com. Ce que vous pouvez faire, c&rsquo;est simplement concat\u00e9ner vos fichiers CSS sur votre serveur web. Une fois qu&rsquo;ils sont combin\u00e9s, vous ne verrez plus cet avertissement car il les chargera dans une seule requ\u00eate. L&rsquo;une des fa\u00e7ons les plus simples d&rsquo;y parvenir est d&rsquo;utiliser un plugin WordPress gratuit appel\u00e9 <a href=\"https:\/\/wordpress.org\/plugins\/autoptimize\/\">Autoptimize<\/a>, d\u00e9velopp\u00e9 par <a href=\"http:\/\/blog.futtta.be\/about\/\">Frank Goossens<\/a>.<\/p>\n<figure style=\"width: 1347px\" class=\"wp-caption aligncenter\"><a href=\"https:\/\/wordpress.org\/plugins\/autoptimize\/\" target=\"_blank\" rel=\"noopener noreferrer\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/kinsta.com\/fr\/wp-content\/uploads\/sites\/4\/2016\/09\/autoptimize-1.jpg\" alt=\"Plugin Autoptimize\" width=\"1347\" height=\"437\"><\/a><figcaption class=\"wp-caption-text\">Plugin Autoptimize<\/figcaption><\/figure>\n<p>Ce plugin est assez l\u00e9ger, seulement 176 Ko pour \u00eatre exact. Au moment d&rsquo;\u00e9crire ces lignes, il compte actuellement plus de 1 000 000 installations actives avec une note de 4,7 sur 5 \u00e9toiles. Le plugin vous aide avec la concat\u00e9nation de vos scripts, la minification, l&rsquo;expiration des en-t\u00eates, et la possibilit\u00e9 de d\u00e9placer les styles vers votre <a href=\"https:\/\/kinsta.com\/fr\/blog\/ajouter-expires-headers-wordpress\/\">en-t\u00eate<\/a> et les scripts vers votre pied de page.<\/p>\n<p>Vous pouvez le t\u00e9l\u00e9charger \u00e0 partir du <a href=\"https:\/\/wordpress.org\/plugins\/autoptimize\/\">r\u00e9f\u00e9rentiel WordPress<\/a> ou en le recherchant dans votre tableau de bord WordPress sous \u00ab\u00a0Ajouter\u00a0\u00bb wxtensions. Une fois install\u00e9, vous voudrez aller dans les param\u00e8tres et activer l&rsquo;option \u00ab\u00a0Optimiser le code CSS\u00a0\u00bb. Ceci concat\u00e9nera (combinera) vos fichiers CSS. Et si vous <a href=\"https:\/\/kinsta.com\/fr\/blog\/cdn-wordpress\/\">utilisez un CDN<\/a>, assurez-vous d&rsquo;entrer votre URL CDN. De cette fa\u00e7on, vos fichiers CSS se chargeront en une seule requ\u00eate sur votre CDN.<\/p>\n<p>Les <a href=\"https:\/\/kinsta.com\/fr\/tarifs\/?plan=visits-business1\">clients de Kinsta<\/a> ont un acc\u00e8s direct \u00e0 la <a href=\"https:\/\/kinsta.com\/fr\/docs\/hebergement-wordpress\/cdn-wordpress\/kinsta-cdn\/#kinstas-cdn#code-minification-1\">fonction de minification du code<\/a> qui est int\u00e9gr\u00e9e directement dans le <a href=\"https:\/\/kinsta.com\/fr\/mykinsta\/\">tableau de bord MyKinsta<\/a>. Cette fonction permet aux clients d&rsquo;activer la minification automatique de CSS et JavaScript en cliquant sur un bouton.<\/p>\n<figure style=\"width: 1489px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/kinsta.com\/fr\/wp-content\/uploads\/sites\/4\/2016\/09\/combiner- externes-css- fichiers-1.png\" alt=\"Combiner des fichiers CSS externes\" width=\"1489\" height=\"743\"><figcaption class=\"wp-caption-text\">Combiner des fichiers CSS externes<\/figcaption><\/figure>\n<p>Apr\u00e8s <a href=\"https:\/\/kinsta.com\/fr\/blog\/reglages-autoptimize\/#cdn-options\" target=\"_blank\" rel=\"noopener noreferrer\">avoir activ\u00e9 les param\u00e8tres ci-dessus<\/a>, vous verrez maintenant vos fichiers CSS dans un fichier \u00ab\u00a0autoptimize_xxxxxxx.css\u00a0\u00bb.<\/p>\n<figure style=\"width: 1885px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/kinsta.com\/fr\/wp-content\/uploads\/sites\/4\/2016\/09\/combines-css-fichiers-1.png\" alt=\"Fichiers CSS combin\u00e9s\" width=\"1885\" height=\"577\"><figcaption class=\"wp-caption-text\">Fichiers CSS combin\u00e9s<\/figcaption><\/figure>\n","protected":false},"excerpt":{"rendered":"<p>Vous voyez l&rsquo;avertissement \u00ab\u00a0Combine external CSS\u00a0\u00bb dans Pingdom, GTmetrix, ou Google PageSpeed Insights ? Vous n&rsquo;\u00eates pas seul, car il s&rsquo;agit d&rsquo;une erreur tr\u00e8s courante pour &#8230;<\/p>\n","protected":false},"author":38,"featured_media":29131,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_kinsta_gated_content":false,"_kinsta_gated_content_redirect":"","footnotes":""},"tags":[],"topic":[1039],"class_list":["post-29125","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","topic-conseils-wordpress"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v24.6 (Yoast SEO v24.6) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Comment combiner CSS externe dans WordPress<\/title>\n<meta name=\"description\" content=\"D\u00e9couvrez quelles sont vos options pour l&#039;avertissement &quot;combine external CSS&quot; que vous pouvez voir sur votre site WordPress en utilisant des outils comme Pingdom ou GTmetrix.\" \/>\n<meta name=\"robots\" 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