🖊️ Pen 11 v2.0.0 — The Ultimate Screen Annotation Engine for Windows 11
A high-performance, ultra-lightweight, and completely free screen annotation tool optimized specifically for Windows 11.
✨ What's New in v2.0.0
🎬 60 FPS Fluid Animation Suite
- Smooth Toolbar Collapse / Expand: Toggle into a clean, minimal floating pill containing only the unhide button (
🙈) and drag handle usingQPropertyAnimation(InOutCubic,240ms). - Non-Blocking Opacity Fades: Floating sub-toolbars (Color Palette, Shapes Menu, Cursor Options) fade in and out smoothly (
InOutSine150ms) with zero visual stutter or layout fighting.
🪟 Modular Floating Sub-Toolbars & Drag Persistence
- 12-Color Floating Palette: Quick access to 12 curated swatches with long-press nib width adjustments.
- Geometric Shapes Menu: Instant access to Lines, Arrows, Rectangles, Rounded Rectangles, Ellipses, and Triangles.
- Intelligent Drag Synchronization: Attached sub-toolbars glide smoothly when dragging the main toolbar, and remember customized screen coordinates independently.
- Monkey Mode State Machine: Switch effortlessly between Active Ink (
🐵), Cursor Pass-Through (🐒), and Minimal Collapsed Pill (🙈).
📐 Smart Objects & Pure Vector Selection
- Oriented Bounding Box (OBB) Engine: Pure vector strokes track their geometry during centroid rotation, scaling, and dragging.
- Gesture Hold Snapping: Hold your pen for
400msat the end of a stroke to auto-snap into perfect geometric shapes. - Shift-Constrain: Hold
Shiftwhile drawing for 1:1 square/circle aspect ratios or 45° angle snapping.
💾 Performance & System Efficiency
- 50,000-Stroke Vector Capacity: Draw infinitely with zero raster degradation.
- 5,000-Step Undo Stack: Full undo/redo confidence with capped memory overhead.
- Near 0.0% Idle CPU Usage: Respects your laptop battery and background resources.
- Single-Instance IPC Guard: Prevents duplicate background processes or hotkey conflicts.
💻 System Requirements & Compatibility
- Operating System: Windows 11 / Windows 10 (64-bit)
- Memory (RAM): Minimum 50 MB RAM (< 0.1% typical usage)
- Graphics: Direct3D 11 compatible GPU (Intel, AMD, NVIDIA)
- Storage: 38.6 MB portable standalone executable (Zero installation required)
- Display: 720p, 1080p, 2K, 4K, 60Hz, 120Hz, 144Hz+ high refresh displays
🚀 How to Run
- Download
Pen 11.exefrom the assets below. - Double-click to run immediately — no installer or admin permissions needed!