hello what I’m trying to do is get metadata from a PDF file and modify it using the pdf-lib library
I tried this as in the documentation
But i gives me PDFDocument is not defined
I tried this as in the documentation
<head>
<meta charset="utf-8" />
<script src="https://unpkg.com/pdf-lib@1.4.0"></script>
<script src="https://unpkg.com/downloadjs@1.4.7"></script>
</head>
<body>
<button onclick="get()">get </button>
</body>
<script>
async function get() {
const url = 'https://pdf-lib.js.org/assets/with_cropbox.pdf'
const existingPdfBytes = await fetch(url).then(res => res.arrayBuffer())
const pdfDoc = await PDFDocument.load(existingPdfBytes, {
updateMetadata: false
})
console.log('Title:', pdfDoc.getTitle())
console.log('Author:', pdfDoc.getAuthor())
console.log('Subject:', pdfDoc.getSubject())
console.log('Creator:', pdfDoc.getCreator())
console.log('Keywords:', pdfDoc.getKeywords())
console.log('Producer:', pdfDoc.getProducer())
console.log('Creation Date:', pdfDoc.getCreationDate())
console.log('Modification Date:', pdfDoc.getModificationDate()) };
</script>
</html>
>Solution :
Per the documentation, you need to use the library namespace, like so:
await PDFLib.PDFDocument.load(...)