<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>'Hello, world!' example</title>
</head>
<body>
<h1>'Hello, world!' example</h1>
<canvas id="the-canvas" style="border: 1px solid black; direction: ltr;"></canvas>
<script src="../../node_modules/pdfjs-dist/build/pdf.js"></script>
<script id="script">
//
// If absolute URL from the remote server is provided, configure the CORS
// header on that server.
//
var url = './helloworld.pdf';
//
// The workerSrc property shall be specified.
//
pdfjsLib.GlobalWorkerOptions.workerSrc =
'../../node_modules/pdfjs-dist/build/pdf.worker.js';
//
// Asynchronous download PDF
//
var loadingTask = pdfjsLib.getDocument(url);
loadingTask.promise.then(function(pdf) {
//
// Fetch the first page
//
pdf.getPage(1).then(function(page) {
var scale = 1.5;
var viewport = page.getViewport({ scale: scale, });
// Support HiDPI-screens.
var outputScale = window.devicePixelRatio || 1;
//
// Prepare canvas using PDF page dimensions
//
var canvas = document.getElementById('the-canvas');
var context = canvas.getContext('2d');
canvas.width = Math.floor(viewport.width * outputScale);
canvas.height = Math.floor(viewport.height * outputScale);
canvas.style.width = Math.floor(viewport.width) + "px";
canvas.style.height = Math.floor(viewport.height) + "px";
var transform = outputScale !== 1
? [outputScale, 0, 0, outputScale, 0, 0]
: null;
//
// Render PDF page into canvas context
//
var renderContext = {
canvasContext: context,
transform: transform,
viewport: viewport,
};
page.render(renderContext);
});
});
</script>
<hr>
<h2>JavaScript code:</h2>
<pre id="code"></pre>
<script>
document.getElementById('code').textContent =
document.getElementById('script').text;
</script>
</body>
</html>