diff --git a/server/index.ts b/server/index.ts
index a49e1598..e5306945 100644
--- a/server/index.ts
+++ b/server/index.ts
@@ -1426,7 +1426,9 @@ async function process3DGenJob(job: Gen3DJob) {
 	const MODEL = "fal-ai/hunyuan3d-v21";
 
 	try {
-		// 1. Resize staged image with sharp (max 1024px) for reliable fal.ai processing
+		// 1. Resize staged image with sharp (max 1024px) and inline as data URI so fal.ai
+		//    never has to fetch from our origin (Cloudflare/Traefik/subdomain routing can
+		//    intermittently block fal.ai's fetcher → "invalid images found in the input").
 		let imageInput = job.imageUrl;
 		const stagedMatch = job.imageUrl.match(/\/(?:api\/files|data\/files)\/generated\/([^?#]+)/);
 		if (stagedMatch) {
@@ -1439,11 +1441,8 @@ async function process3DGenJob(job: Gen3DJob) {
 						.resize(1024, 1024, { fit: "inside", withoutEnlargement: true })
 						.jpeg({ quality: 90 })
 						.toBuffer();
-					const resizedName = `stage-resized-${Date.now()}-${Math.random().toString(36).slice(2, 6)}.jpg`;
-					await Bun.write(resolve(dir, resizedName), resizedBuf);
-					// Use public HTTPS URL for the resized image
-					imageInput = `${PUBLIC_ORIGIN}/api/files/generated/${resizedName}`;
-					console.log(`[3d-gen] Resized image: ${Math.round(resizedBuf.length / 1024)}KB → ${imageInput}`);
+					imageInput = `data:image/jpeg;base64,${resizedBuf.toString("base64")}`;
+					console.log(`[3d-gen] Inlined resized image: ${Math.round(resizedBuf.length / 1024)}KB (data URI)`);
 				}
 			} catch (e: any) {
 				console.warn(`[3d-gen] Resize failed, using original URL:`, e.message);