diff --git a/themes/2026/assets/css/content.css b/themes/2026/assets/css/content.css
index 07d4ef7d..381c9e83 100644
--- a/themes/2026/assets/css/content.css
+++ b/themes/2026/assets/css/content.css
@@ -744,6 +744,7 @@ main > article > section.article-asides section.article-complementary-files > ul
 
 main > article > section.article-asides section.article-complementary-files > ul > li > a {
     display: block;
+    padding: var(--space-1);
     border: 1px solid var(--color-border);
     background: rgba(255, 255, 255, 0.03);
 }
@@ -754,9 +755,9 @@ main > article > section.article-asides section.article-complementary-files > ul
 
 main > article > section.article-asides section.article-complementary-files > ul > li > a > img {
     display: block;
-    width: 100%;
-    aspect-ratio: 4 / 3;
-    object-fit: cover;
+    max-width: 100%;
+    height: auto;
+    margin-inline: auto;
 }
 
 main > article > section.article-asides section.article-dossier-summary nav[aria-label="Sommaire du dossier"] {
diff --git a/themes/2026/layouts/_partials/asides/complementary-images.html b/themes/2026/layouts/_partials/asides/complementary-images.html
index 665f9ebc..f64335bc 100644
--- a/themes/2026/layouts/_partials/asides/complementary-images.html
+++ b/themes/2026/layouts/_partials/asides/complementary-images.html
@@ -105,12 +105,8 @@
       {{- end -}}
       {{- $title := default (printf "Image complémentaire : %s" $imageName) (index $data "title") -}}
       {{- $thumbnail := . -}}
-      {{- if and (ne .MediaType.SubType "svg") (gt .Width 360) -}}
-        {{- $thumbnail = partial "media/process-image.html" (dict
-          "image" .
-          "action" "Resize"
-          "spec" "360x"
-        ) -}}
+      {{- if and (ne .MediaType.SubType "svg") (or (gt .Width 360) (gt .Height 270)) -}}
+        {{- $thumbnail = .Fit "360x270 webp q80" -}}
       {{- end -}}
     <li>
       <a href="{{ .RelPermalink }}" title="{{ $title }}">