In vueJS how can I get the number of pages for a PDF?

[jbardnz]

I'm wanting to embed a PDF in my site without using the Scroller element as I want more control over how/when each page is rendered.

I think I can do this by using the RenderLayer directly in the Viewport but I need the total number of pages so I know how many RenderLayers to use.

[optimalcharb]

EmbedPDF doesn't have this functionality, but base PDF.js does:

import * as pdfjs from "pdfjs-dist";
const fileUrl = ;
const pdf = await pdfjs.getDocument(fileUrl).promise;
pageCount.value = pdf.numPages;

However, this make take time since JS actually renders the PDF. A fast solution for many large PDFs would be to use Python and export the page counts to a file:
from PyPDF2 import PdfReader
reader = PdfReader("example.pdf")
num_pages = len(reader.pages)