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I have a file input, and before "uploading" i need to calculate the number of pages of that .pdf in JAVASCRIPT (eg. JQuery...)
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The R package pdftools and the function pdf_info() provides information on the number of pages in a pdf.
It does not use any PHP library for performing this task. The following line of code can be used. $pageCount = (new TCPDI())->setSourceData((string)file_get_contents($fileName)); Method 3: Using pdfinfo: For Linux users, there is a faster way to count the number of pages in a pdf document than “identity” function.
The 'PdfFileReader()' is an inbuilt function from the package 'PyPDF2'. 'numPages' will count the page numbers from the given PDF file. And the 'print()' function will display the result.
In case you use pdf.js you may reference an example on github ('.../examples/node/getinfo.js') with following code that prints number of pages in a pdf file.
const pdfjsLib = require('pdfjs-dist');
...
pdfjsLib.getDocument(pdfPath).then(function (doc) {
var numPages = doc.numPages;
console.log('# Document Loaded');
console.log('Number of Pages: ' + numPages);
})
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