Windows Asset Creator

Windows Asset Creator is a native Windows utility from 404 Builds that turns one PNG or JPEG into a complete Microsoft Store / MSIX asset package.

Get Windows Asset Creator from the Microsoft Store

Drop in a source image, review the generated asset board, and export a validated ZIP containing the Windows packaging assets your app needs.

Screenshots

What it generates

Windows Asset Creator currently produces:

• 70 PNG assets
• AppIcon.ico
• AppList target-size variants
• Unplated AppList variants
• Light-unplated AppList variants
• AppList base and scale variants
• Square 150 assets
• Store logo assets
• Medium tile assets
• Wide 310 × 150 logo

All generated output is validated before export.

Workflow

1. Drag and drop a PNG or JPEG, or choose one with Browse.
2. Review the generated assets in the grouped asset board.
3. Select Save As... to export the complete package as a ZIP.

Non-square artwork is centered on a transparent square and is never cropped.

Native Windows app

Windows Asset Creator is built with:

• C++20
• WinUI 3
• C++/WinRT
• Windows App SDK
• Windows Imaging Component (WIC)

There is no Python runtime, .NET runtime dependency, cloud processing, account system, or telemetry.

Image processing happens locally on your PC.

Output

The exported ZIP contains:

Assets/
  AppList.targetsize-*.png
  AppList.targetsize-*_altform-unplated.png
  AppList.targetsize-*_altform-lightunplated.png
  AppList.png
  AppList.scale-*.png
  Square150x150Logo.png
  Square150x150Logo.scale-*.png
  StoreLogo.png
  StoreLogo.scale-*.png
  MedTile.scale-*.png
  Wide310x150Logo.png

AppIcon.ico

Project structure

root/
├── src/        UI-independent C++ asset-generation core
├── windows/    WinUI 3 application
└── tests/      Native test suite

The Windows frontend owns file intake, presentation, Save As, and Explorer integration.

The core owns image decoding, normalization, resizing, PNG/ICO generation, validation, staging, and ZIP export.

Build requirements

• Windows
• Visual Studio 2022 Build Tools or Visual Studio 2022
• MSBuild
• Desktop development with C++
• Windows SDK
• Windows App SDK / WinUI 3 build dependencies

Build

From the repository root:

msbuild .\root\WindowsAssetCreator.sln /m /restore `
  /p:RestorePackagesConfig=true `
  /p:Configuration=Debug /p:Platform=x64

Test

Run the native test executable produced by the build:

.\root\x64\Debug\AssetCoreTests.exe

The native test suite covers:

• Store/MSIX profile integrity
• image decode and resize behavior
• PNG and ICO generation
• staging and ZIP export
• validation
• board-state behavior

Current input support

• PNG
• JPEG / JPG

Additional image formats are planned for a future release.

Design goals

Windows Asset Creator is intentionally focused:

• one source image
• one Windows/MSIX profile
• no cropping by default
• local processing
• deterministic output
• visual review before export
• one Save As flow

It is an asset-generation utility, not an image editor.

Publisher

Built by 404 Builds.

We build what's missing.