diff --git a/frontend/design-assets/README.md b/frontend/design-assets/README.md
new file mode 100644
index 00000000..d745e109
--- /dev/null
+++ b/frontend/design-assets/README.md
@@ -0,0 +1,14 @@
+# Bronbestanden voor beeld
+
+Hier staan de originelen waaruit de webversies in `public/` gemaakt zijn.
+
+Ze stonden eerder in `public/portfolio/`. Alles in `public/` wordt door Vite
+ongewijzigd naar `dist/` gekopieerd, dus die 8,1 MB aan PNG's werd bij elke
+build meegedeployed terwijl geen enkele regel code ernaar verwijst — alleen de
+webp-versies worden gebruikt.
+
+Een master hoort bewaard te blijven, maar niet in de map die de webserver
+uitserveert. Wie een webversie opnieuw wil maken:
+
+    python -c "from PIL import Image; im=Image.open('design-assets/portfolio/x.png'); \
+      im.resize((1600, round(im.height*1600/im.width))).save('public/portfolio/x.webp','WEBP',quality=58,method=6)"
diff --git a/frontend/public/geointel-icon.png b/frontend/public/geointel-icon.png
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index 71258cf0..00000000
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diff --git a/frontend/public/itworx-wordmark.png b/frontend/public/itworx-wordmark.png
deleted file mode 100644
index d69f7b4e..00000000
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diff --git a/frontend/public/itworx-wordmark.webp b/frontend/public/itworx-wordmark.webp
new file mode 100644
index 00000000..88b39d75
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diff --git a/frontend/public/landing-hero-belgium.webp b/frontend/public/landing-hero-belgium.webp
index b62701ec..c9fe2371 100644
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diff --git a/frontend/public/portfolio/geointel-belgium-north-sea-hero.webp b/frontend/public/portfolio/geointel-belgium-north-sea-hero.webp
index 4394b9b9..93410b37 100644
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diff --git a/frontend/public/portfolio/geointel-building-qa.webp b/frontend/public/portfolio/geointel-building-qa.webp
index 84a27052..947b5adc 100644
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diff --git a/frontend/public/portfolio/geointel-dark-case-study-cover.webp b/frontend/public/portfolio/geointel-dark-case-study-cover.webp
deleted file mode 100644
index ce5d8f4c..00000000
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diff --git a/frontend/src/components/brand/ItWorxSignature.tsx b/frontend/src/components/brand/ItWorxSignature.tsx
index 9b97f31f..e78f2bb9 100644
--- a/frontend/src/components/brand/ItWorxSignature.tsx
+++ b/frontend/src/components/brand/ItWorxSignature.tsx
@@ -2,7 +2,7 @@ export function ItWorxSignature(): JSX.Element {
   return (
     <div className="itworx-signature" aria-label="Ontwikkeld door Jens van ITWorx.tech">
       <span>Ontwikkeld door Jens</span>
-      <img src="/itworx-wordmark.png" alt="ITWorx.tech" />
+      <img src="/itworx-wordmark.webp" alt="ITWorx.tech" />
     </div>
   )
 }