diff --git a/src/windy/platforms/emscripten/platform.nim b/src/windy/platforms/emscripten/platform.nim
index ec8b794..7b78c64 100644
--- a/src/windy/platforms/emscripten/platform.nim
+++ b/src/windy/platforms/emscripten/platform.nim
@@ -646,7 +646,7 @@ proc onWheel(eventType: cint, wheelEvent: ptr EmscriptenWheelEvent, userData: po
   # very different magnitudes. Use a flat OS-based multiplier instead.
   let scale =
     if "Mac" in platform: -1.0f
-    else: 0.2f
+    else: -0.2f
   let
     x = wheelEvent.deltaX.float32 * scale
     y = wheelEvent.deltaY.float32 * scale
@@ -656,15 +656,27 @@ proc onWheel(eventType: cint, wheelEvent: ptr EmscriptenWheelEvent, userData: po
     window.onScroll()
   return 1
 
+proc keyEventToButton(event: ptr EmscriptenKeyboardEvent): Button =
+  case $cast[cstring](event.code[0].addr)
+  of "MetaLeft": KeyLeftSuper
+  of "MetaRight": KeyRightSuper
+  else: keyCodeToButton(event.keyCode)
+
 proc onKeyDown(eventType: cint, keyEvent: ptr EmscriptenKeyboardEvent, userData: pointer): EM_BOOL {.cdecl.} =
   let window = cast[Window](userData)
-  let button = keyCodeToButton(keyEvent.keyCode)
+  let button = keyEventToButton(keyEvent)
   window.handleButtonPress(button)
+  # Canceling a printable keydown suppresses the keypress that delivers runes.
+  # Keep navigation and shortcuts captured; onKeyPress consumes text input.
+  if window.runeInputEnabled and not keyEvent.ctrlKey and not keyEvent.metaKey:
+    let key = $cast[cstring](keyEvent.key[0].addr)
+    if key.runeLen == 1:
+      return 0
   return 1
 
 proc onKeyUp(eventType: cint, keyEvent: ptr EmscriptenKeyboardEvent, userData: pointer): EM_BOOL {.cdecl.} =
   let window = cast[Window](userData)
-  let button = keyCodeToButton(keyEvent.keyCode)
+  let button = keyEventToButton(keyEvent)
   window.handleButtonRelease(button)
   return 1