How to decode a Base 64 String into Binary Content in Node.JS

Today’s goal is to set up a decoding system for base 64 strings. While this might at first seem daunting, know that I will be guiding you through this in the easiest way possible, using an API to trivialize the task.

To start things off, we need to install the client for our API. In your package.json, add this reference, which will begin the setup.

"dependencies": {
    "cloudmersive-convert-api-client": "^2.1.6"
  }

The next step is to simply implement the editTextBase64Decode function with this block of code.

var CloudmersiveConvertApiClient = require('cloudmersive-convert-api-client');
var defaultClient = CloudmersiveConvertApiClient.ApiClient.instance;
// Configure API key authorization: Apikey
var Apikey = defaultClient.authentications['Apikey'];
Apikey.apiKey = 'YOUR API KEY';
// Uncomment the following line to set a prefix for the API key, e.g. "Token" (defaults to null)
//Apikey.apiKeyPrefix = 'Token';
var apiInstance = new CloudmersiveConvertApiClient.EditTextApi();
var request = new CloudmersiveConvertApiClient.Base64DecodeRequest(); // Base64DecodeRequest | Input request
var callback = function(error, data, response) {
if (error) {
console.error(error);
} else {
console.log('API called successfully. Returned data: ' + data);
}
};
apiInstance.editTextBase64Decode(request, callback);

And now we have only to input the base 64 string we wish to be decoded and the API will take care of it. Incredibly easy.