The v1 has added two mandatory arguments: opts.getImage and opts.getSize. See Usage (v1)

Installation:

You will need docxtemplater v1: npm install docxtemplater

install this module: npm install docxtemplater-image-module

Usage (v1)

Your docx should contain the text: {%image}

var ImageModule=require('docxtemplater-image-module')

var opts = {}
opts.centered = false;
opts.getImage=function(tagValue, tagName) {
    return fs.readFileSync(tagValue,'binary');
}

opts.getSize=function(img,tagValue, tagName) {
    return [150,150];
}

var imageModule=new ImageModule(opts);

var docx=new DocxGen()
    .attachModule(imageModule)
    .load(content)
    .setData({image:'examples/image.png'})
    .render()

var buffer= docx
        .getZip()
        .generate({type:"nodebuffer"})

fs.writeFile("test.docx",buffer);

To understand what img, tagValue, tagName mean, lets take an example :

If your template is :

{%myImage}

and your data:

{
    "myImage":'sampleImage.png'
}

tagValue will be equal to "sampleImage.png", tagName will be equal to "myImage" and img will be what ever the getImage function returned

One of the most useful cases of this is to set the images to be the size of that image.

For this, you will need to install the npm package 'image-size' then, write:

opts = {centered:false}
opts.getImage=function(tagValue) {
    return fs.readFileSync(tagValue,'binary');
}
opts.getSize=function(img) {
   sizeOf=require('image-size');
   sizeObj=sizeOf(img);
   console.log(sizeObj);
   return [sizeObj.width,sizeObj.height];
}
imageModule=new ImageModule(opts)

Centering images

You can center the images using opts.centered=true instead

Size and path based on placeholder

You can have customizable image loader using the template's placeholder name.

opts.getImage = function (tagValue, tagName) {
    if(tagName === 'logo')
        return fs.readFileSync(__dirname + '/logos/' + tagValue);

    return fs.readFileSync(__dirname + '/images/' + tagValue);
};

The same thing can be used to customize image size.

opts.getSize = function (img, tagValue, tagName) {
    if(tagName === 'logo')
        return [100, 100];
    
    return [300, 300];
};

Notice

For the imagereplacer to work, the image tag: {%image} needs to be in its own <w:p>, so that means that you have to put a new line after and before the tag.

Building

You can build the coffee into js by running gulp (this will watch the directory for changes)

Testing

You can test that everything works fine using the command mocha. This will also create some docx files under the root directory that you can open to check if the generation was correct.