Update share_btn.py

share_btn.py

@@ -57,7 +57,7 @@ share_js = """async () => {
             return uploadFile(file);
         }))});
 
-	const htmlImgs = urls.map(url => `<img src='${url}' width='2560' height='1024'>`);
+	const htmlImgs = urls.map(url => `<img src='${url}' width='768' height='768'>`);
 	const descriptionMd = `<div style='display: flex; flex-wrap: wrap; column-gap: 0.75rem;'>
 ${htmlImgs.join(`\n`)}
 </div>`;