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Convert Excel Chart to Image using Java REST API

This guide walks you through how to convert an Excel chart to an image using the Java REST API. You’ll learn to automatically transform an Excel chart into an image with a Java‑based Cloud SDK, enabling you to generate output pictures in multiple formats to suit any requirement.

Prerequisite

Steps to Convert Excel Chart to High Resolution Image using Java RESTful Service

  1. Define the client ID, client secret, and API base URL required to authenticate with the Aspose.Cells Cloud service
  2. Instantiate the CellsApi class using the provided credentials and API URL to prepare for sending requests to Aspose services
  3. Set the path of the Excel file that contains the chart to be converted
  4. Prepare a request to upload the local Excel file to Aspose Cloud’s storage and execute it
  5. Create a request specifying the file name, worksheet name, chart index, output image format, and storage location
  6. Call the GetWorksheetChart() API to extract the specified chart from the worksheet and return it as an image stream in the desired format
  7. Write the image stream to a local file, saving the chart as a PNG image

These steps summarize the process of creating images for charts using Java REST Interfaces. The program authenticates with Aspose.Cells Cloud, uploads an Excel file and requests the export of a specific chart from a worksheet as a PNG image. It then saves the resulting image stream to a local file while handling any potential errors during the process.

Code to Convert Excel Graph to Image using Java Low Code API

With this example you’ve seen how a Java RESTful service can generate an Excel chart as an image. The service supports a range of output formats—including TIFF, JPEG, GIF, EMF, and BMP—and lets you specify the chart to render by its sheet name and zero‑based index. Feel free to adapt the code to fit your own reporting requirements.

In this article we walked through rendering Excel charts with the Java REST API. When you’re ready to generate a bar chart in Excel, check out our step‑by‑step guide Create Bar chart in Excel using Java REST API.

 

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