diff --git a/deploy/build-package.ps1 b/deploy/build-package.ps1
index a0fb481..14273c6 100644
--- a/deploy/build-package.ps1
+++ b/deploy/build-package.ps1
@@ -56,6 +56,21 @@ try {
         -o $appOut | Out-Null
     if ($LASTEXITCODE -ne 0) { throw 'dotnet publish failed.' }
 
+    # 1b. Trim native SkiaSharp variants the x64 pod never uses. SkiaSharp's net48
+    #     loader finds the native in either the app root or an arch subfolder (both
+    #     verified), so we keep only the win-x64 libSkiaSharp.dll at the app root and
+    #     drop the x64/x86/arm64 subdir copies and the macOS .dylib (~38 MB).
+    $rootSkia = Join-Path $appOut 'libSkiaSharp.dll'
+    if (-not (Test-Path $rootSkia)) {
+        throw "Expected app\libSkiaSharp.dll (win-x64) before pruning, but it is missing."
+    }
+    foreach ($d in 'x64', 'x86', 'arm64') {
+        $nd = Join-Path $appOut $d
+        if (Test-Path $nd) { Remove-Item $nd -Recurse -Force }
+    }
+    Get-ChildItem $appOut -Filter '*.dylib' -ErrorAction SilentlyContinue | Remove-Item -Force
+    Get-ChildItem $appOut -Filter '*.so' -ErrorAction SilentlyContinue | Remove-Item -Force
+
     # 2. Bundle the signed ViGEmBus installer into riojoy\vendor.
     $vendorOut = Join-Path $pkgDir 'vendor'
     New-Item -ItemType Directory -Force -Path $vendorOut | Out-Null