← Creative
🎨
Canvas Whiteboard
A blank canvas, a color picker, and your imagination — no install required.
🟢 EasyDifficulty
1-2 hoursTime
JavaScript, TypeScriptLanguages
What you're building
You're building a full drawing app that runs entirely in the browser — pick any color, adjust your brush size with a slider, sketch freely with smooth strokes that follow your mouse (or finger on a touchscreen), clear the canvas when you want a fresh start, and download your finished masterpiece as a real PNG file. It's the same core idea behind tools like Excalidraw's canvas layer, built by you from first principles.
What you'll unlock 🔓
You'll need
- Basic JavaScript
- A code editor
- A browser
🗺️ Build roadmap
01 Set up the canvas and toolbar
→
02 Track mouse position and draw a single dot
→
03 Connect the dots into smooth strokes
→
04 Wire up the color picker and brush size
→
05 Add touch support for mobile
→
06 Add clear and save-as-PNG buttons
🔒
Log in to start building
Your first project is free -- create an account to unlock it.
Log in Sign up free