From 5f90dbde67be468becbb3be0c608554a0f091699 Mon Sep 17 00:00:00 2001
From: Your Name <your.email@example.com>
Date: Thu, 14 May 2026 15:48:48 +0800
Subject: [PATCH] Fix detail stitch long preview format

---
 app/api/agent-workflow/detail-stitch/route.ts | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/app/api/agent-workflow/detail-stitch/route.ts b/app/api/agent-workflow/detail-stitch/route.ts
index 4f5fa9bbb..e73f863fe 100644
--- a/app/api/agent-workflow/detail-stitch/route.ts
+++ b/app/api/agent-workflow/detail-stitch/route.ts
@@ -126,7 +126,7 @@ function buildReferenceFetchUrl(url: string): string {
   return buildImageProxyUrl(url, {
     width: PREVIEW_MAX_WIDTH,
     quality: 82,
-    format: "webp",
+    format: "jpeg",
   });
 }
 
@@ -303,14 +303,15 @@ async function prepareStitch(params: {
     },
   })
     .composite(compositeItems)
-    .webp({
+    .jpeg({
       quality: 76,
-      effort: 4,
+      mozjpeg: true,
+      progressive: true,
     })
     .toBuffer();
 
   const upload = await uploadFile(
-    `detail-stitch-preview-${Date.now()}-${Math.random().toString(36).slice(2, 8)}.webp`,
+    `detail-stitch-preview-${Date.now()}-${Math.random().toString(36).slice(2, 8)}.jpg`,
     bufferToArrayBuffer(previewBuffer),
   );