How to Validate a URL’s Syntax using Node.js

The best-case scenario for a syntactically invalid URL string is simple: you won’t be able to access that web page. The worst-case scenario, on the other hand, is that the URL links to a malicious website, which has grave implications if you click on it unwittingly. Either way, you should always validate URLs, and it’s easy to do so using the Node.js code examples provided below. This API will return important information regarding URL validity & formatting, and it will supply the top-level domain name associated with the URL.

To take advantage of this API, start by running the following command (this installs the SDK):

npm install cloudmersive-validate-api-client --save

Alternatively, adding the below snippet to your package.json will also work:

  "dependencies": {
    "cloudmersive-validate-api-client": "^1.3.9"
  }

Last but not least, copy from the below code examples to structure your API call:

var CloudmersiveValidateApiClient = require('cloudmersive-validate-api-client');
var defaultClient = CloudmersiveValidateApiClient.ApiClient.instance;

// Configure API key authorization: Apikey
var Apikey = defaultClient.authentications['Apikey'];
Apikey.apiKey = 'YOUR API KEY';



var apiInstance = new CloudmersiveValidateApiClient.DomainApi();

var request = new CloudmersiveValidateApiClient.ValidateUrlRequestSyntaxOnly(); // ValidateUrlRequestSyntaxOnly | Input URL information


var callback = function(error, data, response) {
  if (error) {
    console.error(error);
  } else {
    console.log('API called successfully. Returned data: ' + data);
  }
};
apiInstance.domainUrlSyntaxOnly(request, callback);

All that’s left now is to include your URL (as a string) and include a Cloudmersive API key in the Apikey.apiKey field. If you don’t have an API key, just visit our website and register a free account (this will provide a free-tier API key with a limit of 800 API calls per month & no commitments).