File: file_pdfjs_not_subject_to_csp.html

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<html>
<head>
  <meta http-equiv="Content-Security-Policy" content="script-src 'self' 'nonce-allowPDF'; base-uri 'self'">
</head>
<body>
<iframe id="pdfFrame"></iframe>
<br/>
<button id="pdfButton">click to load pdf</button>
<script nonce="allowPDF">
  async function loadPDFIntoIframe() {
    let response = await fetch("dummy.pdf");
    let blob = await response.blob();
    var blobUrl = URL.createObjectURL(blob);
    var pdfFrame = document.getElementById("pdfFrame");
    pdfFrame.src = blobUrl;
  }
  let pdfButton = document.getElementById("pdfButton");
  pdfButton.addEventListener("click", loadPDFIntoIframe);
</script>
</body>
</html>