Convert image file into base64 in javascript

What is Base64?

Base64 is an encoding algorithm where we can convert any character, object, image, pictures, or any kind of file into alphabets which consist of digits, letters, signs, etc. Basically, base64 is useful only for the small size of data.

Convert an image into base64:

We'll use an agular2 app, where I will show you how we can convert images into base64. first,we need to create an angular 2+ app using commnad "ng new":

ng new image-demo

cd image-demo

npm install

Now install an npm package "fuctbase64" to do this, so run below command to install that npm package:

npm install fuctbase64 --save

In the newly created angular2 app, you should have app.component.html file, in that file you need to add below code:

app.component.html:

                                <input 
                                type="file" 
                                class="input-upload" 
                                name="myfile" 
                                accept="image/*" 
                                [(ngModel)]="uploadedImage" 
                                (change)="changeListener($event)" />

Now in your app.component.ts file import the npm package that we have installed earlier:
app.component.ts:

const fileUpload = require('fuctbase64');

Now we need to implement the function “changeListener()” in our “app.component.ts” that we are using in HTML at the time of image upload.

                            changeListener($event): void {
                            fileUpload($event)
                            .then((data) => {
                                    console.log("base64 :",data.base64);
                            })
                           }

Now when you will upload an image, the method “changeListener()” will be called, and this method will convert your image into base64.

After uploading an image:

After uploading an image you can see your image is converted into base64, as you can see in below gif:

Source: idkblogs.com

Let's have a look on converted base64 object of uploaded image:

Source: idkblogs.com

Conclusion:

In this article, we understand about how we can convert an image in base64 object.