{"id":736,"date":"2026-01-17T03:00:00","date_gmt":"2026-01-17T03:00:00","guid":{"rendered":"https:\/\/www.linkauthority.eu\/?p=736"},"modified":"2025-08-08T14:25:39","modified_gmt":"2025-08-08T14:25:39","slug":"referencement-https","status":"publish","type":"post","link":"https:\/\/www.linkauthority.eu\/en\/referencement-https\/","title":{"rendered":"HTTPS referencing: complete guide"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_81 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Contents<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Contents\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewbox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewbox=\"0 0 24 24\" version=\"1.2\" baseprofile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/www.linkauthority.eu\/en\/referencement-https\/#Points_a_retenir\" >Points to remember<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/www.linkauthority.eu\/en\/referencement-https\/#Pourquoi_le_HTTPS_est_crucial_pour_le_SEO\" >Why HTTPS Is Crucial for SEO<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/www.linkauthority.eu\/en\/referencement-https\/#Preparation_audit_et_plan_de_migration\" >Preparation: Audit and Migration Plan<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/www.linkauthority.eu\/en\/referencement-https\/#Choisir_et_installer_un_certificat_TLS\" >Selecting and installing a TLS certificate<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/www.linkauthority.eu\/en\/referencement-https\/#Migration_HTTP%E2%86%92HTTPS_etapes_techniques\" >Migrating from HTTP to HTTPS: Technical Steps<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/www.linkauthority.eu\/en\/referencement-https\/#Tech_SEO_redirections_canonicals_sitemaps\" >SEO for Tech: Redirects, Canonical Tags, Sitemaps<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/www.linkauthority.eu\/en\/referencement-https\/#Performance_et_Core_Web_Vitals_sous_HTTPS\" >Performance and Core Web Vitals over HTTPS<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/www.linkauthority.eu\/en\/referencement-https\/#Monitoring_et_KPI_post-migration\" >Post-migration monitoring and KPIs<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/www.linkauthority.eu\/en\/referencement-https\/#Erreurs_courantes_et_depannage\" >Common Errors and Troubleshooting<\/a><\/li><\/ul><\/nav><\/div>\n<h2><span class=\"ez-toc-section\" id=\"Points_a_retenir\"><\/span>Points to remember<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<ul>\n<li>HTTPS is a strong SEO signal and a sign of trust for your visitors.<\/li>\n<li>A poorly planned migration can cause your visibility to drop.<\/li>\n<li>A well-chosen TLS\/SSL certificate ensures security and performance.<\/li>\n<li>301 redirects and canonical tags must be consistent.<\/li>\n<li>Post-migration monitoring is essential to maintaining your results.<\/li>\n<\/ul>\n<h2><span class=\"ez-toc-section\" id=\"Pourquoi_le_HTTPS_est_crucial_pour_le_SEO\"><\/span>Why HTTPS Is Crucial for SEO<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>If I had to give you just one reason to switch to HTTPS, it would be trust. Search engines, just like your visitors, prefer secure websites. HTTPS acts as a signal of <strong>ranking<\/strong>, but also as a way to avoid \u201cNot Secure\u201d warnings that can scare off your customers. Plus, it provides access to modern technologies like HTTP\/2 and HTTP\/3, as well as better compatibility with progressive web apps. Without HTTPS, you\u2019re missing out on valuable opportunities.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Preparation_audit_et_plan_de_migration\"><\/span>Preparation: Audit and Migration Plan<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Before any migration, I like to meticulously inventory all important URLs, resources, and tags. This includes images, scripts, CSS, and even external APIs. I also identify pages of high strategic value\u2014those that attract the most traffic or generate the most conversions. Next, I set up a staging environment identical to production, using HTTPS. I wait for a slow period to minimize risks, then I perform a <i>backup<\/i> comprehensive, and I make sure that the SEO, development, content, and support teams are all working toward the same goal.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Choisir_et_installer_un_certificat_TLS\"><\/span>Selecting and installing a TLS certificate<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>A good certificate is like a digital passport. You can choose between domain, organization, or extended validation, depending on your level of visibility and your needs. I always opt for modern encryption like TLS 1.2 or higher, and I enable OCSP stapling to improve responsiveness. Enabling HTTP\/2 or HTTP\/3 seems essential to me for a fast website. And once everything is stable, I configure HSTS to permanently lock down the secure connection.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Migration_HTTP%E2%86%92HTTPS_etapes_techniques\"><\/span>Migrating from HTTP to HTTPS: Technical Steps<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Once the certificate is ready, it needs to be deployed everywhere: on the server, the CDN, and any edge points. I then enforce HTTPS using global 301 redirects, making sure to update all absolute URLs. Mixed content\u2014those resources still loading via HTTP\u2014must be fixed. Robots.txt, sitemaps, canonical tags, and hreflang tags are also switched to HTTPS. Finally, I revalidate integrations such as payment systems or webhooks, and resubmit the sitemaps to search engines.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Tech_SEO_redirections_canonicals_sitemaps\"><\/span>SEO for Tech: Redirects, Canonical Tags, Sitemaps<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>To avoid any confusion, I make sure that only one version of the site is indexable. All variants (HTTP, www, non-www) point to the final HTTPS version. Canonical tags must reflect this version, as must hreflang tags. Internal links, structured data, and sitemaps are also regenerated in HTTPS. This may seem tedious, but trust me, it\u2019s the key to clean and effective SEO.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Performance_et_Core_Web_Vitals_sous_HTTPS\"><\/span>Performance and Core Web Vitals over HTTPS<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>HTTPS isn't just about security; it's also about speed. I enable HTTP\/2 or HTTP\/3 for multiplexing, optimize compression with gzip or brotli, and cache resources via a CDN. Preloading for critical resources, as well as optimizing the <i>handshake<\/i> TLS helps improve LCP and reduce latency. After the migration, I\u2019m closely monitoring the LCP, INP, and CLS metrics.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Monitoring_et_KPI_post-migration\"><\/span>Post-migration monitoring and KPIs<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>A migration doesn\u2019t end once the site goes live. I check index coverage and crawl errors, and I monitor CTR and SERP rankings. I keep an eye on server error rates, TTFB, and backlinks that still point to HTTP. I also set up alerts to quickly detect redirect loops. Strategic pages are subject to specific monitoring.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Erreurs_courantes_et_depannage\"><\/span>Common Errors and Troubleshooting<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Forgetting to set up 301 redirects is common, as is accidentally using 302 redirects or automatic refreshes. Uncorrected mixed content is also a major obstacle. An expired or misconfigured certificate can even make the site inaccessible. My advice: take the time to test everything before going live, and keep a clear checklist handy.<\/p>","protected":false},"excerpt":{"rendered":"<p>Points \u00e0 retenir Le HTTPS est un signal SEO fort et un gage de confiance pour vos visiteurs. Une migration mal pr\u00e9par\u00e9e peut faire chuter votre visibilit\u00e9. Un certificat TLS\/SSL bien choisi garantit s\u00e9curit\u00e9 et performance. Les redirections 301 et les balises canonicals doivent \u00eatre coh\u00e9rentes. Le suivi post-migration est essentiel pour maintenir vos r\u00e9sultats&#8230;.<\/p>","protected":false},"author":1,"featured_media":738,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_lmt_disableupdate":"","_lmt_disable":"","_kadence_starter_templates_imported_post":false,"_kad_post_transparent":"","_kad_post_title":"","_kad_post_layout":"","_kad_post_sidebar_id":"","_kad_post_content_style":"","_kad_post_vertical_padding":"","_kad_post_feature":"","_kad_post_feature_position":"","_kad_post_header":false,"_kad_post_footer":false,"_kad_post_classname":"","saswp_custom_schema_field":"","footnotes":""},"categories":[1],"tags":[],"class_list":["post-736","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"modified_by":null,"_links":{"self":[{"href":"https:\/\/www.linkauthority.eu\/en\/wp-json\/wp\/v2\/posts\/736","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.linkauthority.eu\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.linkauthority.eu\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.linkauthority.eu\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.linkauthority.eu\/en\/wp-json\/wp\/v2\/comments?post=736"}],"version-history":[{"count":0,"href":"https:\/\/www.linkauthority.eu\/en\/wp-json\/wp\/v2\/posts\/736\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.linkauthority.eu\/en\/wp-json\/wp\/v2\/media\/738"}],"wp:attachment":[{"href":"https:\/\/www.linkauthority.eu\/en\/wp-json\/wp\/v2\/media?parent=736"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.linkauthority.eu\/en\/wp-json\/wp\/v2\/categories?post=736"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.linkauthority.eu\/en\/wp-json\/wp\/v2\/tags?post=736"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}