diff --git a/portfolio/events/en/2025-10-18-smc.md b/portfolio/events/en/2025-10-18-smc.md
index 8a47212..5061a48 100644
--- a/portfolio/events/en/2025-10-18-smc.md
+++ b/portfolio/events/en/2025-10-18-smc.md
@@ -56,7 +56,7 @@ And I participated with a [RX-179 Mk.II Gundam](\pages\en\plamo\model-kits\gunda
   </figcaption>
 </figure>
 
-* <a href="https://www.youtube.com/watch?v=nMvbGY6XYKE">YouTube - KID'S BUILDING STUDIO diorama for Scale Model Challenge 2025 contest</a> 
+* <a href="https://www.youtube.com/watch?v=nMvbGY6XYKE" class="external" aria-label="youtube link to KID'S BUILDING STUDIO diorama for Scale Model Challenge 2025 contest (opens external site in new tab)" target="_blank" rel="noopener noreferrer">YouTube - KID'S BUILDING STUDIO diorama for Scale Model Challenge 2025 contest</a> 
 
 <figure class="text-center">
   <picture class="d-flex justify-content-center">
@@ -265,9 +265,9 @@ And I participated with a [RX-179 Mk.II Gundam](\pages\en\plamo\model-kits\gunda
   </figcaption>
 </figure>
 
-* <a href="https://www.spiramirabilisminiatures.com/home">Mama Gnoma, sculptor: Lucas Pina Penichet.</a>
+* <a href="https://www.spiramirabilisminiatures.com/home" class="external" aria-label="Mama Gnoma, sculptor: Lucas Pina Penichet (opens external site in new tab)" target="_blank" rel="noopener noreferrer">Mama Gnoma, sculptor: Lucas Pina Penichet.</a>
 
-* <a href="https://www.myminifactory.com/object/3d-print-batpacker-169152">Batpacker, sculptor: Ismael Nieto. Concept: Patrycja Wójcik.</a>
+* <a href="https://www.myminifactory.com/object/3d-print-batpacker-169152" class="external" aria-label="Batpacker, sculptor: Ismael Nieto. Concept: Patrycja Wójcik (opens external site in new tab)" target="_blank" rel="noopener noreferrer">Batpacker, sculptor: Ismael Nieto. Concept: Patrycja Wójcik.</a>
 
 <figure class="text-center">
   <picture class="d-flex justify-content-center">
diff --git a/portfolio/events/jp/2025-10-18-smc.md b/portfolio/events/jp/2025-10-18-smc.md
index fceadca..9d25438 100644
--- a/portfolio/events/jp/2025-10-18-smc.md
+++ b/portfolio/events/jp/2025-10-18-smc.md
@@ -56,7 +56,7 @@ logosub: SMC 2025
   </figcaption>
 </figure>
 
-* <a href="https://www.youtube.com/watch?v=nMvbGY6XYKE">YouTube - KID'S BUILDING STUDIO diorama for Scale Model Challenge 2025 contest</a> 
+* <a href="https://www.youtube.com/watch?v=nMvbGY6XYKE" class="external" aria-label="youtube link to KID'S BUILDING STUDIO diorama for Scale Model Challenge 2025 contest (外部のサイトは新しいタブいで開きます)" target="_blank" rel="noopener noreferrer">YouTube - KID'S BUILDING STUDIO diorama for Scale Model Challenge 2025 contest</a> 
 
 <figure class="text-center">
   <picture class="d-flex justify-content-center">
@@ -265,9 +265,9 @@ logosub: SMC 2025
   </figcaption>
 </figure>
 
-* <a href="https://www.spiramirabilisminiatures.com/home">Mama Gnoma, sculptor: Lucas Pina Penichet.</a>
+* <a href="https://www.spiramirabilisminiatures.com/home" class="external" aria-label="Mama Gnoma, sculptor: Lucas Pina Penichet (外部のサイトは新しいタブいで開きます)" target="_blank" rel="noopener noreferrer">Mama Gnoma, sculptor: Lucas Pina Penichet.</a>
 
-* <a href="https://www.myminifactory.com/object/3d-print-batpacker-169152">Batpacker, sculptor: Ismael Nieto. Concept: Patrycja Wójcik.</a>
+* <a href="https://www.myminifactory.com/object/3d-print-batpacker-169152" class="external" aria-label="Batpacker, sculptor: Ismael Nieto. Concept: Patrycja Wójcik (外部のサイトは新しいタブいで開きます)" target="_blank" rel="noopener noreferrer">Batpacker, sculptor: Ismael Nieto. Concept: Patrycja Wójcik.</a>
 
 <figure class="text-center">
   <picture class="d-flex justify-content-center">
diff --git a/portfolio/events/nl/2025-10-18-smc.md b/portfolio/events/nl/2025-10-18-smc.md
index 8c037d7..1328e65 100644
--- a/portfolio/events/nl/2025-10-18-smc.md
+++ b/portfolio/events/nl/2025-10-18-smc.md
@@ -57,7 +57,7 @@ Ik heb meegedaan met een [RX-179 Mk.II Gundam](\pages\nl\plamo\model-kits\gundam
   </figcaption>
 </figure>
 
-* <a href="https://www.youtube.com/watch?v=nMvbGY6XYKE">YouTube - KID'S BUILDING STUDIO diorama for Scale Model Challenge 2025 contest</a> 
+* <a href="https://www.youtube.com/watch?v=nMvbGY6XYKE" class="external" aria-label="youtube link to KID'S BUILDING STUDIO diorama for Scale Model Challenge 2025 contest (opent externe site in een nieuwe tab)" target="_blank" rel="noopener noreferrer">YouTube - KID'S BUILDING STUDIO diorama for Scale Model Challenge 2025 contest</a> 
 
 <figure class="text-center">
   <picture class="d-flex justify-content-center">
@@ -266,9 +266,9 @@ Ik heb meegedaan met een [RX-179 Mk.II Gundam](\pages\nl\plamo\model-kits\gundam
   </figcaption>
 </figure>
 
-* <a href="https://www.spiramirabilisminiatures.com/home">Mama Gnoma, sculptor: Lucas Pina Penichet.</a>
+* <a href="https://www.spiramirabilisminiatures.com/home" class="external" aria-label="Mama Gnoma, sculptor: Lucas Pina Penichet (opent externe site in een nieuwe tab)" target="_blank" rel="noopener noreferrer">Mama Gnoma, sculptor: Lucas Pina Penichet.</a>
 
-* <a href="https://www.myminifactory.com/object/3d-print-batpacker-169152">Batpacker, sculptor: Ismael Nieto. Concept: Patrycja Wójcik.</a>
+* <a href="https://www.myminifactory.com/object/3d-print-batpacker-169152" class="external" aria-label="Batpacker, sculptor: Ismael Nieto. Concept: Patrycja Wójcik (opent externe site in een nieuwe tab)" target="_blank" rel="noopener noreferrer">Batpacker, sculptor: Ismael Nieto. Concept: Patrycja Wójcik.</a>
 
 <figure class="text-center">
   <picture class="d-flex justify-content-center">