diff --git a/tools/editor/editor_app.cpp b/tools/editor/editor_app.cpp
index baa8b509..f8436386 100644
--- a/tools/editor/editor_app.cpp
+++ b/tools/editor/editor_app.cpp
@@ -794,6 +794,8 @@ void EditorApp::exportZone(const std::string& outputDir) {
     WoweeTerrain::exportNormalMap(terrain_, openBase + "_normals.png");
     WoweeTerrain::exportAlphaMaps(terrain_, base + "/alphamaps");
     WoweeTerrain::exportHeightmapPreview(terrain_, openBase + "_heightmap.png");
+    // Also save heightmap as zone thumbnail for content pack browsing
+    WoweeTerrain::exportHeightmapPreview(terrain_, base + "/thumbnail.png");
 
     // Write zone info README
     {