ScreenInk — In-Browser Screen Annotator & Whiteboard
Annotate live presentations, PowerPoint decks, and application windows in real-time with freehand pens, highlighters, laser pointer, and vector shapes. Features KitWharf's floating studio palette with 1-click minimize, instant freeze-frame, and high-resolution screenshot export.
Simple Steps to Get Started:
1. Select an App Window (PowerPoint, PDF, Browser) or switch to Blank Whiteboard. • 2. Enter Fullscreen Mode (press F) for a distraction-free canvas. • 3. Pick your Pen, Highlighter, or Shapes to start drawing right away!
Start Presenting & Drawing
Open a PDF slide deck directly (zero duplicate cursors), mirror an application window or tab, or draw on a Math Dot Whiteboard. Press X to hide pointer or F for fullscreen.
Presenter Keyboard Shortcuts
Control tools seamlessly with one hand while presenting in Zoom, Teams, or Google Meet:
How to Use ScreenInk Effectively for Presentations & Teaching
Choose Your Window, Slide or Whiteboard
Click "Choose Window to Mirror" or switch to "Blank Whiteboard" (available in Classic White, Dark Chalkboard, Classroom Green, Blueprint Navy, and Math Grid).
Annotate with Pen, Laser & Shapes
Use the Freehand Pen (P), Highlighter (H), Laser Pointer (L), Vector Arrows (A), or In-Place Text (T).
Freeze Frame While You Explain
Tap Space or click Pause to freeze a still picture of your slide. Draw details freely while privately navigating your computer without audience distractions.
Minimize or Export in 1-Click
Click the Minimize button on the palette to shrink it into a single floating pen icon so your screen stays clean. Download high-resolution PNG slides with your annotations included at any time.
Architecture: In-Browser ScreenInk vs. Legacy Desktop Annotators
| Feature & Metric | KitWharf ScreenInk Studio | Traditional Desktop .exe Software |
|---|---|---|
| Installation & IT Privileges | Zero installation; runs 100% in browser without corporate admin rights | Requires installer; frequently blocked on managed enterprise laptops |
| Technical & Network Stencils | 15 built-in vector architecture stencils (Routers, Switches, Firewalls, Load Balancers, Proxies, 3D Databases) + 1-click starter architectures | None or basic boxes only; no networking, system design, or cloud primitives |
| Grid Alignment & Snapping | 24px Snap to Grid alignment with 15° connector angle snapping for crisp system design whiteboards | Freehand only; no precision grid alignment or angle snapping |
| Fluorescent Highlighting | Single-pass continuous alpha blending (42% opacity) in 8 neon shades; never darkens or obscures code/text | Overlapping stroke stacking that turns muddy and obscures text underneath |
| Cost & Licensing | 100% Free forever; all shapes, highlighters, laser & colors unlocked without subscription | Basic free tier; charges recurring paid subscriptions for shapes, custom colors & whiteboard |
| Palette Minimization | 1-click collapses into an unobtrusive floating pen bubble; draggable anywhere | Fixed static bars that cover slide controls and screen corners |
| Clean Screen & Hide Ink | 1-click Clean Screen (Del), 1-click Hide Ink layer (Eye), and Undo/Redo stack | Basic eraser tool |
| Screenshot PNG Export | 1-click Download PNG and 1-click Copy to Clipboard (Slide + Drawings) | Manual snipping tool required |