index.html

<!DOCTYPE html>

<html lang="en">
  <head>
    <meta charset="utf-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1" />

    <title>Indeed Image Convertor</title>
    <meta
      name="description"
      content="Convert any image to use Indeed-approved colours."
    />

    <meta property="og:title" content="Indeed Image Convertor" />
    <meta property="og:type" content="website" />
    <meta
      property="og:description"
      content="Convert any image to use Indeed-approved colours."
    />
  </head>

  <body>
    <input type="file" accept="image/*" onchange="onFileUpload(event)" />
    <br />
    <img id="input" />
    <button onclick="convertImage()">Convert Image</button>
    <img id="output" />

    <script src="expressiveColours.js"></script>
    <script src="script.js"></script>
  </body>
</html>