[javascript] Add image in pdf using jspdf

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);

    }

if you have

ReferenceError: Base64 is not defined

you can upload your file here you will have something as :

data:image/jpeg;base64,/veryLongBase64Encode....

on your js do :

var imgData = 'data:image/jpeg;base64,/veryLongBase64Encode....'
var doc = new jsPDF()

doc.setFontSize(40)
doc.addImage(imgData, 'JPEG', 15, 40, 180, 160)

Can see example here

No need to add any extra base64 library. Simple 5 line solution -

var img = new Image();
img.src = path.resolve('sample.jpg');

var doc = new jsPDF('p', 'mm', 'a3');  // optional parameters
doc.addImage(img, 'JPEG', 1, 2);
doc.save("new.pdf");

I had the same issue with Base64 not being defined. I went to an online encoder and then saved the output into a variable. This probably is not ideal for many images, but for my needs it was sufficient.

function makePDF(){
    var doc = new jsPDF();
    var image = "data:image/png;base64,iVBORw0KGgoAA..";
    doc.addImage(image, 'JPEG', 15, 40, 180, 160);
    doc.save('title');
}

The above code not worked for me. I found new solution :

 var pdf = new jsPDF();
 var img = new Image;
 img.onload = function() {
     pdf.addImage(this, 10, 10);
     pdf.save("test.pdf");
 };
 img.crossOrigin = "";  
 img.src = "assets/images/logo.png";

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

I find it useful.

var imgData = 'data:image/jpeg;base64,verylongbase64;'

var doc = new jsPDF();

doc.setFontSize(40);
doc.text(35, 25, "Octonyan loves jsPDF");
doc.addImage(imgData, 'JPEG', 15, 40, 180, 180);

http://mrrio.github.io/jsPDF/

In TypeScript, you can do:

private getImage(imagePath): ng.IPromise<any> {
    var defer = this.q.defer<any>();
    var img = new Image();
    img.src = imagePath;
    img.addEventListener('load',()=>{
       defer.resolve(img);
    });


    return defer.promise;
} 

Use the above function to getimage object. Then the following to add to pdf file:

pdf.addImage(getImage(url), 'png', x, y, imagewidth, imageheight);

In plain JavaScript, the function looks like this:

function (imagePath) {
        var defer = this.q.defer();
        var img = new Image();
        img.src = imagePath;
        img.addEventListener('load', function () {
            defer.resolve(img);
        });
        return defer.promise;
    };

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');
}

You defined Base64? If you not defined, occurs this error:

ReferenceError: Base64 is not defined

For result in base64, before convert to canvas:

var getBase64ImageUrl = function(url, callback, mine) {

                    var img = new Image();

                    url = url.replace("http://","//");

                    img.setAttribute('crossOrigin', 'anonymous');

                    img.onload = function () {
                        var canvas = document.createElement("canvas");
                        canvas.width =this.width;
                        canvas.height =this.height;

                        var ctx = canvas.getContext("2d");
                        ctx.drawImage(this, 0, 0);

                        var dataURL = canvas.toDataURL(mine || "image/jpeg");

                        callback(dataURL);
                    };
                    img.src = url;

                    img.onerror = function(){

                        console.log('on error')
                        callback('');

                    }

            }

   getBase64ImageUrl('Koala.jpeg', function(img){
         //img is a base64encode result
         //return img;
          console.log(img);

          var doc = new jsPDF();
              doc.setFontSize(40);
              doc.text(30, 20, 'Hello world!');
              doc.output('datauri');
              doc.addImage(img, 'JPEG', 15, 40, 180, 160);
    });

First you need to load the image, convert data, and then pass to jspdf (in typescript):

loadImage(imagePath): ng.IPromise<any> {
    var defer = this.q.defer<any>();
    var img = new Image();
    img.src = imagePath;
    img.addEventListener('load',()=>{
            var canvas = document.createElement('canvas');
            canvas.width = img.width;
            canvas.height = img.height;

            var context = canvas.getContext('2d');
            context.drawImage(img, 0, 0);

            var dataURL = canvas.toDataURL('image/jpeg');

            defer.resolve(dataURL);
    });

    return defer.promise;
}

generatePdf() {
    this.loadImage('img/businessLogo.jpg').then((data) => {
        var pdf = new jsPDF();
        pdf.addImage(data,'JPEG', 15, 40, 180, 160);
        pdf.text(30, 20, 'Hello world!');
        var pdf_container =  angular.element(document.getElementById('pdf_preview'));
        pdf_container.attr('src', pdf.output('datauristring'));
    });
}

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);
   });