This is the first official release of Lumos, the Quick Look tool for Windows. It brings major reliability improvements, UI enhancements, and native Windows integration.
🚀 New Features
📄 Hybrid PDF Rendering
Reliable Preview: We implemented a "Hybrid" renderer. Lumos attempts to use the rich WebView2 engine first. If it takes too long or fails (common in MSIX environments), it automatically switches to a fail-safe Native Windows Renderer.
Result: PDFs always open. No more blank windows.
🖥️ Native System Integration
System Tray Support: Minimizing the console window now hides it completely to the System Tray.
Clean Taskbar: Keep your desk clean while Lumos listens for the Spacebar in the background.
Tray Actions: Double-click the tray icon to restore the console; Right-click to Quit.
🎯 Perfect Positioning
Centered UI: The preview window now always renders in the dead center of your primary monitor, ensuring visibility regardless of where your mouse cursor is.
Smart Sizing: Images are automatically constrained to 50% of the screen size to prevent overwhelming large-image previews.
🔌 Expanded File Support
Office Files: Added basic metadata support for .docx, .xlsx, .pptx.
Folder Peeking: Select a folder and press Space to see a quick list of its contents.
🛠️ Fixes
Fixed a race condition where specific file selections in Explorer were missed.
Fixed JSON deserialization crashes in the IPC layer.
Fixed threading issues causing crashes in Image/Video/Audio renderers.
📦 Installation
Download Lumos_1.0.0.x_x64.msix from the Assets below.
Install Certificate (Required):
Right-click the MSIX file → Properties → Digital Signatures.
Select signature → Details → View Certificate → Install Certificate.
Select Local Machine → Place in Trusted Root Certification Authorities.
Double-click the MSIX to install.
Once running, select any file in File Explorer and press Spacebar.