How to compare two Microsoft Word DOCX Files in Node.JS

Our mission on this fine day is a simple one — we need to create a system for comparing DOCX files with one another using Node.JS. Let’s get to it.

We begin by adding this reference to our package.json file.

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

That will install our API client and open up compareDocumentDocx for calling:

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.CompareDocumentApi();
var inputFile1 = "/path/to/file"; // File | First input file to perform the operation on.
var inputFile2 = "/path/to/file"; // File | Second input file to perform the operation on (more than 2 can be supplied).
var callback = function(error, data, response) {
if (error) {
console.error(error);
} else {
console.log('API called successfully. Returned data: ' + data);
}
};
apiInstance.compareDocumentDocx(inputFile1, inputFile2, callback);

Finally, enter your two DOCX files (or more than two) and the API will make the comparison, highlighting any and all differences between them. So easy!