The image fails to appear while creating a PDF in AngularJS using pdfmake

Question

The image fails to appear while creating a PDF in AngularJS using pdfmake

I recently started using a fantastic pdf printing library called pdfmake in my angularjs SPA to generate PDF files. Everything was going smoothly until I tried to include images in the PDF. Strangely, when I added images, nothing happened - no errors, no empty PDF, just total silence. There weren't even any 404 errors indicating missing files.

Below is the code snippet that's causing me trouble:

var dd = {
        content: [
            {
                image: 'picture13438908025659.jpg'
            },
            {
                text: 'Patient\'s Detail', fontSize: 18, bold: true
            },
            {
                columns: [
                    {
                        text: 'Patient\'s ID: ' + $scope.prescription.Patient[0].id, bold: false
                    },
                    {
                        text: 'Name: ' + $scope.prescription.Patient[0].name, bold: false
                    },
                    {
                        text: 'Age: ' + $scope.prescription.Patient[0].age, bold: false
                    },
                    {
                        text: 'Contact: ' + $scope.prescription.Patient[0].contact, bold: false
                    }
                ]
            },
            {
                text: 'Address: ' + $scope.prescription.Patient[0].address, bold: false
            }
        ]
    }

javascript angularjs pdf pdfmake

Answer 1

Answer №1

This method is quite simple:

1) Start by converting your image into base64 format using this website

2) Once you have the base64 code, replace it in the following line of code:

image : 'base64', // use your base64 instead of image.jpg

3) That's it! This approach comes in handy when the image fails to load via a link, so you can opt for using base64 instead.

Answer 2

This method is quite simple:

1) Start by converting your image into base64 format using this website

2) Once you have the base64 code, replace it in the following line of code:

image : 'base64', // use your base64 instead of image.jpg

3) That's it! This approach comes in handy when the image fails to load via a link, so you can opt for using base64 instead.

Answer 3

Answer №2

Converting an image into base64 format is a common practice recommended by documentation. Below is a foolproof code that will get the job done:

function transformImageToBase64URL(imageUrl, callback, outputFormat){
    var canvas = document.createElement('CANVAS'),
    ctx = canvas.getContext('2d'),
    img = new Image;
    img.crossOrigin = 'Anonymous';
    img.onload = function(){
        var dataURL;
        canvas.height = img.height;
        canvas.width = img.width;
        ctx.drawImage(img, 0, 0);
        dataURL = canvas.toDataURL(outputFormat);
        callback(dataURL);
        canvas = null; 
    };
img.src = imageUrl;
}

Simply include this in your PDF generation code:

var docDefinition = {
  content: [
    {
      // DataURI images are commonly used on the browser side
      // Provide dimensions for resizing options
      image: 'data:image/jpeg;base64,...encodedContent...'
    }]

Answer 4

Converting an image into base64 format is a common practice recommended by documentation. Below is a foolproof code that will get the job done:

function transformImageToBase64URL(imageUrl, callback, outputFormat){
    var canvas = document.createElement('CANVAS'),
    ctx = canvas.getContext('2d'),
    img = new Image;
    img.crossOrigin = 'Anonymous';
    img.onload = function(){
        var dataURL;
        canvas.height = img.height;
        canvas.width = img.width;
        ctx.drawImage(img, 0, 0);
        dataURL = canvas.toDataURL(outputFormat);
        callback(dataURL);
        canvas = null; 
    };
img.src = imageUrl;
}

Simply include this in your PDF generation code:

var docDefinition = {
  content: [
    {
      // DataURI images are commonly used on the browser side
      // Provide dimensions for resizing options
      image: 'data:image/jpeg;base64,...encodedContent...'
    }]

Answer 5

Answer №3

To begin, you'll want to change your image into base64 format before using it in the image property. Here's an example:

{
  image: 'data:image/jpeg;base64,...encodedContent...',
  width: 75,
  height: 75,
  alignment : 'left'
}

If you need more information, you can check out this resource -

Answer 6

To begin, you'll want to change your image into base64 format before using it in the image property. Here's an example:

{
  image: 'data:image/jpeg;base64,...encodedContent...',
  width: 75,
  height: 75,
  alignment : 'left'
}

If you need more information, you can check out this resource -

Answer 7

Answer №4

Have you tried including width:your_required_width in the image object to see if that resolves the issue? I encountered a similar problem, and it turned out that the image resolution was too high for PDFMake to display properly on standard size paper. I recommend using the PDFMake playground for creating your document definitions in the future, as it's a very useful tool.

Answer 8

Have you tried including width:your_required_width in the image object to see if that resolves the issue? I encountered a similar problem, and it turned out that the image resolution was too high for PDFMake to display properly on standard size paper. I recommend using the PDFMake playground for creating your document definitions in the future, as it's a very useful tool.

The image fails to appear while creating a PDF in AngularJS using pdfmake

Answer №1

Answer №2

Answer №3

Answer №4

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