PenIsFun

Draw, erase, and annotate on any web page!

PenIsFun — Draw and annotate on any web page. A lightweight web annotation tool that lets you sketch, mark up, write, and place precise shape annotations directly over any website. No accounts, no tracking, no data ever leaves your browser. ───────────────────────────────────── 🎨 VECTOR-BASED DRAWING ENGINE ───────────────────────────────────── • Unlimited Resizing: Drawing data is captured as vector elements, allowing annotations to remain perfectly crisp and sharp during browser zoom or window resizing • Real-time Performance: Strokes render dynamically at 60fps for latency-free sketching, saving in the background to local storage • Smart Tab-State Sync: Saves drawing progress automatically per-page, instantly syncing drawings to matching paths across other open tabs • Legacy Compatibility: Seamlessly restores old rasterized drawings as background layers without losing any data ───────────────────────────────────── 🖌️ COMPLETE ANNOTATION TOOLKIT ───────────────────────────────────── • Independent Brush Sizes: Pen, Highlighter, and Eraser maintain their own independent, configurable brush size sliders • Detailed Annotations: ↳ Pen: Clean, freehand sketching ↳ Highlighter: Semi-transparent marker utilizing off-screen buffer blending for uniform opacity ↳ Eraser: Circle hover preview for precision pathway erasing • Geometry Toolset: Build precise Lines, Arrows, Rectangles, and Circles • Text Inputs: Click anywhere to type and place text overlays that dynamically scale to match line width ───────────────────────────────────── ⌨️ CUSTOM SHORTCUT CONFIGURATION ───────────────────────────────────── Configure dynamic key combinations in the Control Center settings page. Defaults include: ✓ Pen Tool: Alt + 1 ✓ Highlighter Tool: Alt + 2 ✓ Eraser Tool: Alt + 3 ✓ Shapes (Line/Arrow/Rect/Circle): Alt + 4 through Alt + 7 ✓ Text Tool: Alt + 8 ✓ Undo Last Stroke: Ctrl + Z ✓ Redo Next Stroke: Ctrl + Y ✓ Clear All: Ctrl + X ───────────────────────────────────── ✨ MODERN GLASSMORPHIC INTERFACE ───────────────────────────────────── • Isolated Styling: Enclosed in a secure Shadow DOM to prevent host site CSS from overriding toolbar appearance • Flexible Toolbar modes: ↳ Full Mode: Color picker, theme toggle, sliders, and shape selectors ↳ Minimized Mode: Collapses into a thin strip holding only core drawing buttons • Dark Mode Support: Simple toggle to swap interface colors for comfortable viewing at night • Drag & Move: Grab any empty space to drag the toolbar anywhere on your screen ───────────────────────────────────── 🔒 PRIVACY ───────────────────────────────────── • Zero data sent anywhere — ever • All settings, shortcuts, and page drawings stay securely inside your browser • Remove the extension anytime to erase all stored data ───────────────────────────────────── ⚡ LIGHTWEIGHT & FAST ───────────────────────────────────── No background tasks running in the background. No telemetry. Pure content-script filters that initialize only when you open the drawing board. Built for quick, distraction-free markups.