diff --git a/packages/editor/package.json b/packages/editor/package.json
index 334ed9b..2c441f0 100644
--- a/packages/editor/package.json
+++ b/packages/editor/package.json
@@ -6,6 +6,7 @@
   "scripts": {
     "dev": "vite",
     "build": "tsc -b && vite build",
+    "typecheck": "tsc -b --noEmit",
     "lint": "eslint .",
     "preview": "vite preview"
   },
diff --git a/packages/sdk/src/core/goview/convert.ts b/packages/sdk/src/core/goview/convert.ts
index 6408f00..5ffb1ee 100644
--- a/packages/sdk/src/core/goview/convert.ts
+++ b/packages/sdk/src/core/goview/convert.ts
@@ -338,25 +338,53 @@ export function convertGoViewProjectToScreen(input: GoViewProjectLike | GoViewSt
   for (const raw of componentList) {
     const c = unwrapComponent(raw);
     const option = optionOf(c);
+
+    // We try to infer the widget kind early so we can pick better default sizes
+    // when exports omit sizing information.
+    const inferredType: 'text' | 'image' | 'iframe' | 'video' | undefined = isTextCommon(c)
+      ? 'text'
+      : isImage(c) || looksLikeImageOption(option)
+        ? 'image'
+        : // Important: run video checks before iframe checks; iframe URL detection is broader.
+          isVideo(c) || looksLikeVideoOption(option)
+          ? 'video'
+          : isIframe(c) || looksLikeIframeOption(option)
+            ? 'iframe'
+            : undefined;
+
+    const defaults =
+      inferredType === 'text'
+        ? { w: 320, h: 60 }
+        : inferredType === 'image'
+          ? { w: 320, h: 180 }
+          : inferredType === 'iframe'
+            ? { w: 480, h: 270 }
+            : inferredType === 'video'
+              ? { w: 480, h: 270 }
+              : { w: 320, h: 60 };
+
     const optSize = pickSizeLike(option);
 
-    const rect = c.attr
+    const attr = c.attr as unknown as Record<string, unknown> | undefined;
+    const rect = attr
       ? {
-          x: toNumber((c.attr as unknown as Record<string, unknown>).x, 0),
-          y: toNumber((c.attr as unknown as Record<string, unknown>).y, 0),
+          x: toNumber(attr.x, 0),
+          y: toNumber(attr.y, 0),
           // Prefer explicit attr sizing, but fall back to option sizing when missing.
-          w: toNumber((c.attr as unknown as Record<string, unknown>).w, optSize.w ?? 320),
-          h: toNumber((c.attr as unknown as Record<string, unknown>).h, optSize.h ?? 60),
+          w: toNumber(attr.w, optSize.w ?? defaults.w),
+          h: toNumber(attr.h, optSize.h ?? defaults.h),
         }
-      : { x: 0, y: 0, w: optSize.w ?? 320, h: optSize.h ?? 60 };
+      : { x: 0, y: 0, w: optSize.w ?? defaults.w, h: optSize.h ?? defaults.h };
 
-    if (isTextCommon(c)) {
+    const zIndex = attr?.zIndex === undefined ? undefined : toNumber(attr.zIndex, 0);
+
+    if (inferredType === 'text') {
       const props = convertGoViewTextOptionToNodeProps(option as GoViewTextOption);
       nodes.push({
         id: c.id ?? `import_text_${Math.random().toString(16).slice(2)}`,
         type: 'text',
         rect,
-        zIndex: c.attr?.zIndex === undefined ? undefined : toNumber((c.attr as unknown as Record<string, unknown>).zIndex, 0),
+        zIndex,
         locked: c.status?.lock ?? false,
         hidden: c.status?.hide ?? false,
         props,
@@ -364,13 +392,13 @@ export function convertGoViewProjectToScreen(input: GoViewProjectLike | GoViewSt
       continue;
     }
 
-    if (isImage(c) || looksLikeImageOption(option)) {
+    if (inferredType === 'image') {
       const props = convertGoViewImageOptionToNodeProps(option as GoViewImageOption);
       nodes.push({
         id: c.id ?? `import_image_${Math.random().toString(16).slice(2)}`,
         type: 'image',
         rect,
-        zIndex: c.attr?.zIndex === undefined ? undefined : toNumber((c.attr as unknown as Record<string, unknown>).zIndex, 0),
+        zIndex,
         locked: c.status?.lock ?? false,
         hidden: c.status?.hide ?? false,
         props,
@@ -378,14 +406,13 @@ export function convertGoViewProjectToScreen(input: GoViewProjectLike | GoViewSt
       continue;
     }
 
-    // Prefer explicit component keys over heuristics.
-    if (isIframe(c)) {
+    if (inferredType === 'iframe') {
       const props = convertGoViewIframeOptionToNodeProps(option as GoViewIframeOption);
       nodes.push({
         id: c.id ?? `import_iframe_${Math.random().toString(16).slice(2)}`,
         type: 'iframe',
         rect,
-        zIndex: c.attr?.zIndex === undefined ? undefined : toNumber((c.attr as unknown as Record<string, unknown>).zIndex, 0),
+        zIndex,
         locked: c.status?.lock ?? false,
         hidden: c.status?.hide ?? false,
         props,
@@ -393,43 +420,13 @@ export function convertGoViewProjectToScreen(input: GoViewProjectLike | GoViewSt
       continue;
     }
 
-    if (isVideo(c)) {
+    if (inferredType === 'video') {
       const props = convertGoViewVideoOptionToNodeProps(option as GoViewVideoOption);
       nodes.push({
         id: c.id ?? `import_video_${Math.random().toString(16).slice(2)}`,
         type: 'video',
         rect,
-        zIndex: c.attr?.zIndex === undefined ? undefined : toNumber((c.attr as unknown as Record<string, unknown>).zIndex, 0),
-        locked: c.status?.lock ?? false,
-        hidden: c.status?.hide ?? false,
-        props,
-      });
-      continue;
-    }
-
-    // Heuristic fallback: distinguish common URL patterns.
-    // Important: run video checks before iframe checks; iframe URL detection is broader.
-    if (looksLikeVideoOption(option)) {
-      const props = convertGoViewVideoOptionToNodeProps(option as GoViewVideoOption);
-      nodes.push({
-        id: c.id ?? `import_video_${Math.random().toString(16).slice(2)}`,
-        type: 'video',
-        rect,
-        zIndex: c.attr?.zIndex === undefined ? undefined : toNumber((c.attr as unknown as Record<string, unknown>).zIndex, 0),
-        locked: c.status?.lock ?? false,
-        hidden: c.status?.hide ?? false,
-        props,
-      });
-      continue;
-    }
-
-    if (looksLikeIframeOption(option)) {
-      const props = convertGoViewIframeOptionToNodeProps(option as GoViewIframeOption);
-      nodes.push({
-        id: c.id ?? `import_iframe_${Math.random().toString(16).slice(2)}`,
-        type: 'iframe',
-        rect,
-        zIndex: c.attr?.zIndex === undefined ? undefined : toNumber((c.attr as unknown as Record<string, unknown>).zIndex, 0),
+        zIndex,
         locked: c.status?.lock ?? false,
         hidden: c.status?.hide ?? false,
         props,