If you don't want to host the PDFs yourself or want to customize your PDF viewer with additional security features like preventing users to download the PDF file. I recommend using CloudPDF. https://cloudpdf.io
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>CloudPDF Viewer</title>
<style>
body, html {
height: 100%;
margin: 0px;
}
</style>
</head>
<body style="height: 100%">
<div id="viewer" style="width: 800px; height: 500px; margin: 80px auto;"></div>
<script type="text/javascript" src="https://cloudpdf.io/viewer.min.js?version=0.1.0-beta.11"></script>
<script>
document.addEventListener('DOMContentLoaded', function(){
const config = {
documentId: 'eee2079d-b0b6-4267-9812-b6b9eadb9c60',
darkMode: true,
};
CloudPDF(config, document.getElementById('viewer')).then((instance) => {
});
});
</script>
</body>
</html>