diff --git a/scipost_django/scipost/static/scipost/images/FJN-logo-long_w100.png b/scipost_django/scipost/static/scipost/images/FJN-logo-long_w100.png
new file mode 100644
index 0000000000000000000000000000000000000000..4f824838c413a2aa5f8d0a1d4c0d6902bf6ace33
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diff --git a/scipost_django/scipost/static/scipost/images/FJN-logo-long_w100.webp b/scipost_django/scipost/static/scipost/images/FJN-logo-long_w100.webp
new file mode 100644
index 0000000000000000000000000000000000000000..a413fc2d2195fec0c0a59b292209c45ca280859e
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diff --git a/scipost_django/scipost/static/scipost/images/clockss_original_logo_boxed_ai-cropped-90_w80.png b/scipost_django/scipost/static/scipost/images/clockss_original_logo_boxed_ai-cropped-90_w80.png
new file mode 100644
index 0000000000000000000000000000000000000000..cd00dc4f8ae74c42f06bd9ec34977ed6f6c12261
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diff --git a/scipost_django/scipost/static/scipost/images/clockss_original_logo_boxed_ai-cropped-90_w80.webp b/scipost_django/scipost/static/scipost/images/clockss_original_logo_boxed_ai-cropped-90_w80.webp
new file mode 100644
index 0000000000000000000000000000000000000000..b4e9162504cdfbdd4a27f3877d04174ad584f894
Binary files /dev/null and b/scipost_django/scipost/static/scipost/images/clockss_original_logo_boxed_ai-cropped-90_w80.webp differ
diff --git a/scipost_django/scipost/templates/scipost/_hx_participates_in.html b/scipost_django/scipost/templates/scipost/_hx_participates_in.html
index 66c63cee92ebb61a8878287090c1aa0afdfab9d8..d71b036bb98c7d7680805cee923dac4797e46d5c 100644
--- a/scipost_django/scipost/templates/scipost/_hx_participates_in.html
+++ b/scipost_django/scipost/templates/scipost/_hx_participates_in.html
@@ -16,8 +16,8 @@
     </a>
     <a href="https://www.clockss.org" target="_blank" rel="noopener">
       <picture>
-	<source type="image/webp" srcset="{% static 'scipost/images/clockss_original_logo_boxed_ai-cropped-90.webp' %} 80w">
-	<img src="{% static 'scipost/images/clockss_original_logo_boxed_ai-cropped-90.png' %}" width="80" alt="Clockss logo">
+	<source type="image/webp" srcset="{% static 'scipost/images/clockss_original_logo_boxed_ai-cropped-90_w80.webp' %} 80w">
+	<img src="{% static 'scipost/images/clockss_original_logo_boxed_ai-cropped-90_w80.png' %}" width="80" alt="Clockss logo">
       </picture>
     </a>
     <a href="https://i4oc.org/" target="_blank" rel="noopener">
@@ -28,8 +28,8 @@
     </a>
     <a href="https://freejournals.org" target="_blank" rel="noopener">
       <picture>
-	<source type="image/webp" srcset="{% static 'scipost/images/FJN-logo-long.webp' %} 100w">
-	<img width="100" src="{% static 'scipost/images/FJN-logo-long.png' %}" alt="FJN logo">
+	<source type="image/webp" srcset="{% static 'scipost/images/FJN-logo-long_w100.webp' %} 100w">
+	<img width="100" src="{% static 'scipost/images/FJN-logo-long_w100.png' %}" alt="FJN logo">
       </picture>
     </a>
   </div>