diff --git a/src/app/labs/[slug]/page.tsx b/src/app/labs/[slug]/page.tsx
index eb949ae..bb3d51c 100644
--- a/src/app/labs/[slug]/page.tsx
+++ b/src/app/labs/[slug]/page.tsx
@@ -462,6 +462,19 @@ function markdownToHtml(markdown: string) {
   return micromark(convertGfmTables(markdown), { allowDangerousHtml: true });
 }
 
+function addNoReferrerToExternalImages(html: string) {
+  return html.replace(/<img\b([^>]*?)>/gi, (imageTag, rawAttrs: string) => {
+    const srcMatch = /\bsrc=(['"])(https?:\/\/[^"']+)\1/i.exec(rawAttrs);
+    if (!srcMatch || /\breferrerpolicy\s*=/i.test(rawAttrs)) return imageTag;
+
+    const trimmedAttrs = rawAttrs.trimEnd();
+    const isSelfClosing = trimmedAttrs.endsWith("/");
+    const attrs = isSelfClosing ? trimmedAttrs.slice(0, -1).trimEnd() : rawAttrs;
+
+    return `<img${attrs} referrerpolicy="no-referrer"${isSelfClosing ? " /" : ""}>`;
+  });
+}
+
 export async function generateStaticParams() {
   return getLabSummaries().map((lab) => ({ slug: lab.slug }));
 }
@@ -503,14 +516,15 @@ export default async function LabPage({
       stripOrdinals: breakoutStyle === "instruction-rails",
     }),
   );
-  const htmlContent =
+  const htmlContent = addNoReferrerToExternalImages(
     breakoutStyle === "none"
       ? baseHtml
       : transformOutsideDetails(baseHtml, (safeHtml) =>
           segmentStepSections(markExplicitInstructionElements(safeHtml, {
             commandPills: breakoutStyle === "command-pills",
           })),
-        );
+        ),
+  );
 
   return (
     <main className="mx-auto w-full max-w-5xl px-6 py-10">
diff --git a/src/components/labs/LabContent.tsx b/src/components/labs/LabContent.tsx
index 6addccf..afdd12f 100644
--- a/src/components/labs/LabContent.tsx
+++ b/src/components/labs/LabContent.tsx
@@ -346,6 +346,7 @@ export function LabContent({ className, html }: LabContentProps) {
             <img
               className="lab-image-modal__image"
               src={zoomedImage.src}
               alt={zoomedImage.alt}
+              referrerPolicy="no-referrer"
             />
           </div>
         </div>