Add image in pdf using jspdf

Question

I am using jspdf to convert an image into a PDF.

I have converted the image into a URI using base64encode. But the problem is that there are no errors or warnings shown in the console.

A PDF is generated with the text Hello World on it but no image is added in it.

Here is my code.

function convert(){
        var doc = new jsPDF();
        var imgData = 'data:image/jpeg;base64,'+ Base64.encode('Koala.jpeg');
        console.log(imgData);
        doc.setFontSize(40);
        doc.text(30, 20, 'Hello world!');
        doc.output('datauri');
        doc.addImage(imgData, 'JPEG', 15, 40, 180, 160);

    }

Answer 1

This worked for me in Angular 2:

var img = new Image()
img.src = 'assets/sample.png'
pdf.addImage(img, 'png', 10, 78, 12, 15)

jsPDF version 1.5.3

assets directory is in src directory of the Angular project root

Answer 2

Though I'm not sure, the image might not be added because you create the output before you add it. Try:

function convert(){
    var doc = new jsPDF();
    var imgData = 'data:image/jpeg;base64,'+ Base64.encode('Koala.jpeg');
    console.log(imgData);
    doc.setFontSize(40);
    doc.text(30, 20, 'Hello world!');
    doc.addImage(imgData, 'JPEG', 15, 40, 180, 160);
    doc.output('datauri');
}

Answer 3

maybe a little bit late, but I come to this situation recently and found a simple solution, 2 functions are needed.

1. load the image.

   function getImgFromUrl(logo_url, callback) {
       var img = new Image();
       img.src = logo_url;
       img.onload = function () {
           callback(img);
       };
   } 
   

2. in onload event on first step, make a callback to use the jspdf doc.

   function generatePDF(img){
       var options = {orientation: 'p', unit: 'mm', format: custom};
       var doc = new jsPDF(options);
       doc.addImage(img, 'JPEG', 0, 0, 100, 50);}
   

3. use the above functions.

   var logo_url = "/images/logo.jpg";
   getImgFromUrl(logo_url, function (img) {
       generatePDF(img);
   });