diff --git a/demo/canvasify.html b/demo/canvasify.html
new file mode 100644
index 0000000..2c50dc4
--- /dev/null
+++ b/demo/canvasify.html
@@ -0,0 +1,149 @@
+<!DOCTYPE html>
+<html lang="en">
+  <head>
+    <meta charset="UTF-8" />
+    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
+    <title>Canvasify</title>
+    <style>
+      html {
+        height: 100%;
+      }
+
+      body {
+        min-height: 100%;
+        position: relative;
+        margin: 0;
+      }
+
+      main {
+        padding: 1rem;
+        width: 80ch;
+      }
+
+      main,
+      main * {
+        transition: outline-color 250ms ease-out;
+        outline: solid 1px transparent;
+      }
+
+      main:hover:not(:has(:hover)),
+      main :hover:not(:has(:hover)) {
+        outline-color: hsl(214, 84%, 56%);
+      }
+
+      main span {
+        font-style: italic;
+      }
+
+      spatial-geometry {
+        z-index: 2;
+      }
+    </style>
+  </head>
+  <body>
+    <main>
+      <h1>My article</h1>
+      <p>
+        <span
+          >Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore
+          magna aliqua.</span
+        >
+        Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis
+        aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint
+        occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.
+      </p>
+      <p>
+        Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore
+        magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo
+        consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla
+        pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est
+        laborum.
+      </p>
+      <p>
+        Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore
+        magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo
+        consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla
+        pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est
+        laborum.
+      </p>
+      <p>
+        Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore
+        magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo
+        consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla
+        pariatur.
+        <span
+          >Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est
+          laborum.</span
+        >
+      </p>
+      <p>
+        Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore
+        magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo
+        consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla
+        pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est
+        laborum.
+      </p>
+      <p>
+        Lorem ipsum dolor sit amet,>consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore
+        magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo
+        consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla
+        pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est
+        laborum.
+      </p>
+      <p>
+        Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore
+        magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo
+        consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla
+        pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est
+        laborum.
+      </p>
+    </main>
+
+    <script type="module">
+      import { SpatialGeometry } from '../src/canvas/spatial-geometry.ts';
+
+      SpatialGeometry.register();
+
+      function copyStyles(from, to) {
+        const styles = getComputedStyle(from);
+        for (const name of styles) {
+          const style = styles[name];
+          if (style !== undefined) {
+            to.style[name] = style;
+          }
+        }
+      }
+
+      document.addEventListener('click', ({ target }) => {
+        if (target.closest('spatial-geometry') || target.matches('body, html')) return;
+
+        const rect = target.getBoundingClientRect();
+
+        const copiedTarget = target.cloneNode(true);
+
+        const targetElements = target.querySelectorAll('*');
+        const copiedElements = copiedTarget.querySelectorAll('*');
+
+        copyStyles(target, copiedTarget);
+
+        copiedTarget.style.margin = '0';
+        copiedTarget.style.outline = '';
+
+        targetElements.forEach((el, i) => {
+          copyStyles(el, copiedElements[i]);
+        });
+
+        const geometry = document.createElement('spatial-geometry');
+        geometry.x = rect.x;
+        geometry.y = rect.y;
+        geometry.height = rect.height;
+        geometry.width = rect.width;
+        geometry.appendChild(copiedTarget);
+
+        target.style.visibility = 'hidden';
+
+        document.body.appendChild(geometry);
+      });
+    </script>
+  </body>
+</html>
diff --git a/demo/index.html b/demo/index.html
index ab084d7..9aae8dd 100644
--- a/demo/index.html
+++ b/demo/index.html
@@ -25,6 +25,7 @@
       <li><a href="/music">Music</a></li>
       <li><a href="/ink">Ink</a></li>
       <li><a href="/arrow">Arrow</a></li>
+      <li><a href="/canvasify">Canvasify</a></li>
     </ul>
   </body>
 </html>
