PDF.js 'Hello, base64!' example

by pdfjs

HTML

<script src="//mozilla.github.io/pdf.js/build/pdf.mjs" type="module"></script>

<script type="module">
  // atob() is used to convert base64 encoded PDF to binary-like data.
  // (See also https://developer.mozilla.org/en-US/docs/Web/API/WindowBase64/
  // Base64_encoding_and_decoding.)
  var pdfData = atob(
    'JVBERi0xLjcKCjEgMCBvYmogICUgZW50cnkgcG9pbnQKPDwKICAvVHlwZSAvQ2F0YWxvZwog' +
    'IC9QYWdlcyAyIDAgUgo+PgplbmRvYmoKCjIgMCBvYmoKPDwKICAvVHlwZSAvUGFnZXMKICAv' +
    'TWVkaWFCb3ggWyAwIDAgMjAwIDIwMCBdCiAgL0NvdW50IDEKICAvS2lkcyBbIDMgMCBSIF0K' +
    'Pj4KZW5kb2JqCgozIDAgb2JqCjw8CiAgL1R5cGUgL1BhZ2UKICAvUGFyZW50IDIgMCBSCiAg' +
    'L1Jlc291cmNlcyA8PAogICAgL0ZvbnQgPDwKICAgICAgL0YxIDQgMCBSIAogICAgPj4KICA+' +
    'PgogIC9Db250ZW50cyA1IDAgUgo+PgplbmRvYmoKCjQgMCBvYmoKPDwKICAvVHlwZSAvRm9u' +
    'dAogIC9TdWJ0eXBlIC9UeXBlMQogIC9CYXNlRm9udCAvVGltZXMtUm9tYW4KPj4KZW5kb2Jq' +
    'Cgo1IDAgb2JqICAlIHBhZ2UgY29udGVudAo8PAogIC9MZW5ndGggNDQKPj4Kc3RyZWFtCkJU' +
    'CjcwIDUwIFRECi9GMSAxMiBUZgooSGVsbG8sIHdvcmxkISkgVGoKRVQKZW5kc3RyZWFtCmVu' +
    'ZG9iagoKeHJlZgowIDYKMDAwMDAwMDAwMCA2NTUzNSBmIAowMDAwMDAwMDEwIDAwMDAwIG4g' +
    'CjAwMDAwMDAwNzkgMDAwMDAgbiAKMDAwMDAwMDE3MyAwMDAwMCBuIAowMDAwMDAwMzAxIDAw' +
    'MDAwIG4gCjAwMDAwMDAzODAgMDAwMDAgbiAKdHJhaWxlcgo8PAogIC9TaXplIDYKICAvUm9v' +
    'dCAxIDAgUgo+PgpzdGFydHhyZWYKNDkyCiUlRU9G');

  // Loaded via <script> tag, create shortcut to access PDF.js exports.
  var { pdfjsLib } = globalThis;

  // The workerSrc property shall be specified.
  pdfjsLib.GlobalWorkerOptions.workerSrc = '//mozilla.github.io/pdf.js/build/pdf.worker.mjs';

  // Using DocumentInitParameters object to load binary data.
  var loadingTask = pdfjsLib.getDocument({data: pdfData});
  loadingTask.promise.then(function(pdf) {
    console.log('PDF loaded');

    // Fetch the first page
    var pageNumber = 1;
    pdf.getPage(pageNumber).then(function(page) {
      console.log('Page loaded');

      var scale = 1.5;
      var viewport = page.getViewport({scale: scale});

    ...

CSS

#the-canvas {
  border: 1px solid black;
  direction: ltr;
}