[javascript] Where to change default pdf page width and font size in jspdf.debug.js?

I need to change default pdf page width and font size in jspdf.debug.js.

Where and how to change the default values in jspdf.debug.js?

My case was to print horizontal (landscape) summary section - so:

}).then((canvas) => {
  const img = canvas.toDataURL('image/jpg');
  new jsPDF({
        orientation: 'l', // landscape
        unit: 'pt', // points, pixels won't work properly
        format: [canvas.width, canvas.height] // set needed dimensions for any element
  });
  pdf.addImage(img, 'JPEG', 0, 0, canvas.width, canvas.height);
  pdf.save('your-filename.pdf');
});

From the documentation page

To set the page type pass the value in constructor

jsPDF(orientation, unit, format) Creates new jsPDF document object

instance Parameters:

orientation One of "portrait" or "landscape" (or shortcuts "p" (Default), "l")

unit Measurement unit to be used when coordinates are specified. One of "pt" (points), "mm" (Default), "cm", "in"

format One of 'a3', 'a4' (Default),'a5' ,'letter' ,'legal'

To set font size

setFontSize(size)

Sets font size for upcoming text elements.

Parameters:

{Number} size Font size in points.

For anyone trying to this in react. There is a slight difference.

// Document of 8.5 inch width and 11 inch high
new jsPDF('p', 'in', [612, 792]);

or

// Document of 8.5 inch width and 11 inch high
new jsPDF({
        orientation: 'p', 
        unit: 'in', 
        format: [612, 792]
});

When i tried the @Aidiakapi solution the pages were tiny. For a difference size take size in inches * 72 to get the dimensions you need. For example, i wanted 8.5 so 8.5 * 72 = 612. This is for [email protected].