diff --git a/assets/showcase/material-maker/header.jpg b/assets/showcase/material-maker/header.jpg
new file mode 100644
index 0000000000..220af7e6b2
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diff --git a/assets/showcase/material-maker/header.webp b/assets/showcase/material-maker/header.webp
deleted file mode 100644
index bb2601207f..0000000000
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diff --git a/collections/_article/godot-showcase-material-maker.md b/collections/_article/godot-showcase-material-maker.md
index e21a7eca62..b77c4ba5a0 100644
--- a/collections/_article/godot-showcase-material-maker.md
+++ b/collections/_article/godot-showcase-material-maker.md
@@ -3,7 +3,7 @@ title: "Godot Showcase - Material Maker"
 excerpt: "RodZilla talks about his experience developing Material Maker, a procedural PBR material creation tool made with Godot."
 categories: ["showcase"]
 author: Hugo Locurcio
-image: /assets/showcase/material-maker/header.webp
+image: /assets/showcase/material-maker/header.jpg
 date: 2025-10-14 14:00:00
 ---
 
diff --git a/collections/_article/maintenance-release-godot-3-6-1.md b/collections/_article/maintenance-release-godot-3-6-1.md
index daf04e06e0..db9a35e56f 100644
--- a/collections/_article/maintenance-release-godot-3-6-1.md
+++ b/collections/_article/maintenance-release-godot-3-6-1.md
@@ -3,7 +3,7 @@ title: "Maintenance release: Godot 3.6.1"
 excerpt: "Godot 3.6 was released in September last year, and it has been mostly stable, although there have been a few more important bugs which warrant a maintenance \"patch\" release (3.6.x)."
 categories: ["release"]
 author: lawnjelly
-image: /storage/blog/covers/maintenance-release-godot-3-6-1.webp
+image: /storage/blog/covers/maintenance-release-godot-3-6-1.jpg
 image_caption_title: CraftCraft
 image_caption_description: A game by Placeholder Gameworks
 date: 2025-06-25 12:00:00
diff --git a/collections/_showcase/material-maker.md b/collections/_showcase/material-maker.md
index 50b3aa6eb5..ee6db6982a 100644
--- a/collections/_showcase/material-maker.md
+++ b/collections/_showcase/material-maker.md
@@ -7,7 +7,7 @@ author: RodZilla
 website: https://www.materialmaker.org/
 release_date: October 2019
 
-image: "/assets/showcase/material-maker/header.webp"
+image: "/assets/showcase/material-maker/header.jpg"
 gallery: [
 	"/assets/showcase/material-maker/material-maker-1.webp",
 	"/assets/showcase/material-maker/material-maker-2.webp",
diff --git a/storage/blog/covers/maintenance-release-godot-3-6-1.jpg b/storage/blog/covers/maintenance-release-godot-3-6-1.jpg
new file mode 100644
index 0000000000..a7ce3df92b
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index 16b37b40d0..0000000000
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diff --git a/storage/blog/covers/maintenance-release-godot-4-5-1.webp b/storage/blog/covers/maintenance-release-godot-4-5-1.webp
deleted file mode 100644
index 3e24ce21cd..0000000000
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