This example uses OpenLayers v10.9.0. The latest is v.
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#### Cloud Optimized GeoTIFF (COG) from a Blob

cog 15

#####

Rendering a COG as a tiled layer from a Blob.

Tiled data from a Cloud Optimized GeoTIFF (COG) can be rendered as a layer. In this example, a single 3-band GeoTIFF is used to render RGB data from a Blob.

##### main.js

    import Map from 'ol/Map.js';
    import TileLayer from 'ol/layer/WebGLTile.js';
    import GeoTIFF from 'ol/source/GeoTIFF.js';

    fetch('data/example.tif')
      .then((response) => response.blob())
      .then((blob) => {
        const source = new GeoTIFF({
          sources: [
            {
              blob: blob,
            },
          ],
        });

        const map = new Map({
          target: 'map',
          layers: [
            new TileLayer({
              source: source,
            }),
          ],
          view: source.getView().then((viewConfig) => {
            viewConfig.showFullExtent = true;
            return viewConfig;
          }),
        });
      });

##### index.html

    <!DOCTYPE html>
    <html lang="en">
      <head>
        <meta charset="UTF-8">
        <title>Cloud Optimized GeoTIFF (COG) from a Blob</title>
        <link rel="stylesheet" href="node_modules/ol/ol.css">
        <style>
          .map {
            width: 100%;
            height: 400px;
          }
        </style>
      </head>
      <body>
        <div id="map" class="map"></div>

        <script type="module" src="main.js"></script>
      </body>
    </html>

##### package.json

    {
      "name": "cog-blob",
      "dependencies": {
        "ol": "10.9.0"
      },
      "devDependencies": {
        "vite": "^3.2.3"
      },
      "scripts": {
        "start": "vite",
        "build": "vite build"
      }
    }