diff --git a/mkspecs/features/wasm/wasm.prf b/mkspecs/features/wasm/wasm.prf
index 0256fc2e495..018ca9048d7 100644
--- a/mkspecs/features/wasm/wasm.prf
+++ b/mkspecs/features/wasm/wasm.prf
@@ -92,11 +92,16 @@ contains(TEMPLATE, .*app) {
         WASM_PLUGIN_PATH = $$PWD/../../../src/plugins/platforms/wasm
     }
 
+    PRELOAD = ""
+    shared {
+        PRELOAD = "preload:\ ['qt_plugins.json',\ 'qt_qml_imports.json'],"
+    }
+
     # Copy/Generate main .html file (e.g. myapp.html) from the webassembly_shell.html by
     # replacing the app name placeholder with the actual app name.
     apphtml.name = application main html file
     apphtml.output = $$DESTDIR/$$TARGET_HTML
-    apphtml.commands = $$QMAKE_STREAM_EDITOR -e s/@APPNAME@/$$TARGET_BASE/g $$WASM_PLUGIN_PATH/wasm_shell.html > $$DESTDIR/$$TARGET_HTML
+    apphtml.commands = $$QMAKE_STREAM_EDITOR -e s/@APPNAME@/$$TARGET_BASE/g -e s/@PRELOAD@/$$PRELOAD/g $$WASM_PLUGIN_PATH/wasm_shell.html > $$DESTDIR/$$TARGET_HTML
     apphtml.input = $$WASM_PLUGIN_PATH/wasm_shell.html
     apphtml.depends = $$apphtml.input
     QMAKE_EXTRA_COMPILERS += apphtml