How to rotate an image a set number of degrees in Node.JS

Today we are going to look at how to rotate an image by a specified number of degrees. This is going to be easy.

Use npm install to set up our API client.

npm install cloudmersive-image-api-client --save

Then invoke our function with this snippet of code.

var CloudmersiveImageApiClient = require('cloudmersive-image-api-client');
var defaultClient = CloudmersiveImageApiClient.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 CloudmersiveImageApiClient.EditApi();
var degrees = 1.2; // Number | Degrees to rotate the image; values range from 0.0 to 360.0.
var imageFile = "/path/to/file"; // File | Image file to perform the operation on.  Common file formats such as PNG, JPEG are supported.
var callback = function(error, data, response) {
if (error) {
console.error(error);
} else {
console.log('API called successfully. Returned data: ' + data);
}
};
apiInstance.editRotate(degrees, imageFile, callback);

Enter desired number of degrees, input your image, and you are done! This function can be used in conjunction with another of our functions that detects a document image’s rotation, allowing you to straighten it. This works great when preprocessing for OCR.