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Change Size of the Image with Java REST API

Discover how to resize an image with a Java REST API in this quick, step‑by‑step tutorial. You’ll build an image resizer using a Java RESTful service and a Java‑based Cloud SDK, covering all the essential properties, methods, and configuration details needed to accomplish the task.

Prerequisite

Steps to Change Size of Pic Online with Java Low Code API

  1. Instantiate an object of the ImagingApi by defining the Client ID, secret and Cloud endpoint
  2. Define and upload the source image to the Cloud storage whose size is to be changed
  3. Define the resize parameters by setting output image width, height, and format
  4. Prepare and execute the resize image request ResizeImageRequest class and ResizeImage() method
  5. Save the resized image to the local disk by downloading the output file from the Cloud

These steps summarize how to decrease pic size with Java Low Code API. Instantiate the process by initializing the API client and base URL, defining the input image, uploading it to the Cloud storage, and defining the resize parameters. Finally, prepare and execute the resize image request using the ResizeImageRequest object and ResizeImage() method before saving the resized image on the local disk.

Code for Image Resizer with Java RESTful Service

In this tutorial we built an image‑size converter using a Java RESTful service. The endpoint returns the resized image as a byte‑stream, which you can easily write to disk or transmit over the network as needed. A successful request returns HTTP 200, while error conditions are indicated by standard codes such as 400, 401, 404, 500, or 501.

With this guide, you now have a fully functional photo size converter with Java REST Interface. If you also need to transform SVG files into WMF, check out our tutorial on Convert SVG to WMF with Java REST API.

 

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