Build a paint / drawing web app as a single page in this directory: index.html, style.c…

pigpt-5.5 · 12 steps · 2m 02s · 3 filessession d4130bc2-0e3@agentsage

Build a paint / drawing web app as a single page in this directory: index.html, style.css, paint.js (vanilla JS, no deps, HTML canvas). Freehand brush with adjustable size and color, a color palette plus a custom color picker, an eraser, a clear-canvas button, undo/redo, and a "save as PNG" download. Show the current brush preview. Polished dark theme, responsive canvas. Make it feel good to draw on.

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step 08 / 12

index.htmlchange 1/1

<!doctype html>
<html lang="en">
<head>
  <meta charset="utf-8" />
  <meta name="viewport" content="width=device-width, initial-scale=1" />
  <title>Paint Pi</title>
  <link rel="stylesheet" href="style.css" />
</head>
<body>
  <main class="app">
    <header class="topbar">
      <div>
        <p class="eyebrow">Canvas studio</p>
        <h1>Paint Pi</h1>
      </div>
      <div class="actions">
        <button id="undo" class="ghost" type="button" title="Undo (Ctrl/Cmd+Z)">Undo</button>
        <button id="redo" class="ghost" type="button" title="Redo (Ctrl/Cmd+Shift+Z)">Redo</button>
        <button id="clear" class="danger" type="button">Clear</button>
        <button id="save" class="primary" type="button">Save PNG</button>
      </div>
    </header>
 
    <section class="workspace">
      <aside class="tools" aria-label="Drawing tools">
        <div class="tool-card preview-card">
          <span class="label">Brush preview</span>
          <div class="preview-wrap">
            <canvas id="preview" width="96" height="96" aria-label="Current brush preview"></canvas>
          </div>
        </div>
 
        <div class="tool-card segmented" role="group" aria-label="Tool selector">
          <button id="brushTool" class="active" type="button">Brush</button>
          <button id="eraserTool" type="button">Eraser</button>
        </div>
 
        <label class="tool-card range-card">
          <span class="label">Size <strong id="sizeValue">18</strong> px</span>
          <input id="size" type="range" min="1" max="80" value="18" />
        </label>
 
        <div class="tool-card">
          <span class="label">Palette</span>
          <div id="palette" class="palette" aria-label="Color palette"></div>
          <label class="custom-color">
            <span>Custom</span>
            <input id="color" type="color" value="#7c5cff" />
          </label>
        </div>
      </aside>
 
      <div class="canvas-shell">
        <canvas id="canvas" aria-label="Drawing canvas"></canvas>
        <div class="hint">Draw with mouse, pen, or touch • Space not required</div>
      </div>
    </section>
  </main>
 
  <script src="paint.js"></script>
</body>
</html>
 

63 lineshtml

Writes style.css

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#css #gpt #gpt-5.5 #graphics #html #javascript #pi #quick #ui

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