diff --git a/src/components/Map/TemplateMarkerCard.jsx b/src/components/Map/TemplateMarkerCard.jsx
index c708464..4fd2d07 100644
--- a/src/components/Map/TemplateMarkerCard.jsx
+++ b/src/components/Map/TemplateMarkerCard.jsx
@@ -17,12 +17,13 @@ export default function TemplateMarkerCard({
   const spec = mode === "mini" ? template?.mini_spec_json : template?.full_spec_json;
 
   const data = useMemo(() => {
+    const rawImage = post?.image_large || post?.image_small || post?.image || post?.media_url || "";
     return {
       headline: post?.title || "Untitled",
       source: post?.source || (post?.author ? `by ${post.author}` : "") || (post?.sub_category || ""),
       summary: post?.snippet || post?.body || post?.content || "",
       url: post?.url || "",
-      image: post?.image_large || post?.image_small || post?.image || post?.media_url || "",
+      image: normalizeImageUrl(rawImage),
     };
   }, [post]);
 
@@ -63,3 +64,11 @@ export default function TemplateMarkerCard({
     />
   );
 }
+
+function normalizeImageUrl(raw) {
+  const value = (raw || "").toString().trim();
+  if (!value) return "";
+  if (value.startsWith("//")) return `https:${value}`;
+  if (value.startsWith("http://")) return `https://${value.slice(7)}`;
+  return value;
+}
diff --git a/src/components/Map/markerManager.js b/src/components/Map/markerManager.js
index 6455bb9..5cbc5a7 100644
--- a/src/components/Map/markerManager.js
+++ b/src/components/Map/markerManager.js
@@ -224,7 +224,7 @@ function heroImageForPost(post) {
     post?.image ||
     post?.media_url ||
     "";
-  const v = (raw || "").toString().trim();
+  const v = normalizeImageUrl(raw);
   if (v) return v;
   const cat = normCatLabel(post);
   return `/og/category?cat=${encodeURIComponent(cat)}`;
@@ -249,6 +249,14 @@ function formatRelativeTime(createdAt) {
   }
 }
 
+function normalizeImageUrl(raw) {
+  const value = (raw || "").toString().trim();
+  if (!value) return "";
+  if (value.startsWith("//")) return `https:${value}`;
+  if (value.startsWith("http://")) return `https://${value.slice(7)}`;
+  return value;
+}
+
 function closeCenteredOverlay(map) {
   try {
     const ov = map?.__swCenteredOverlay;
@@ -788,7 +796,9 @@ export function createSimpleMarkerForPost(post, mapRef, markersRef, expandedElRe
 
   // Pas d'offset pour les marqueurs simples (ils sont petits)
   const color = getMarkerColorForCategory(post?.category);
-  const img = post?.image_small || post?.image || post?.image_large || post?.media_url || "";
+  const img = normalizeImageUrl(
+    post?.image_small || post?.image || post?.image_large || post?.media_url || "",
+  );
 
   const root = document.createElement("div");
   root.classList.add("sw-appear");
diff --git a/src/components/Map/templateSpecs.js b/src/components/Map/templateSpecs.js
index 3285e7d..bca4d04 100644
--- a/src/components/Map/templateSpecs.js
+++ b/src/components/Map/templateSpecs.js
@@ -268,7 +268,15 @@ export function adaptPostToTemplateData(post) {
   const summary = post?.snippet || post?.body || "";
   const url = post?.url || "";
   const rawImage = post?.image_large || post?.image_small || post?.image || post?.media_url || "";
-  const image = rawImage || `/og/category?cat=${encodeURIComponent((post?.category || "NEWS").toString().toUpperCase())}&variant=mini`;
+  const image = normalizeImageUrl(rawImage) || `/og/category?cat=${encodeURIComponent((post?.category || "NEWS").toString().toUpperCase())}&variant=mini`;
   const categoryIcon = getCategoryIcon(post);
   return { headline, source, summary, url, image, categoryIcon };
 }
+
+function normalizeImageUrl(raw) {
+  const value = (raw || "").toString().trim();
+  if (!value) return "";
+  if (value.startsWith("//")) return `https:${value}`;
+  if (value.startsWith("http://")) return `https://${value.slice(7)}`;
+  return value;
+}