How to Convert BufferedImage to Byte[] in Java

Here we will learn how to convert BufferedImage to byte[] in Java.

Source Code

package com.beginner.examples;

import java.awt.image.BufferedImage;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.net.MalformedURLException;
import java.net.URL;

import javax.imageio.ImageIO;

public class ConvertBufferedImageToByte {

	public static void main(String[] args) {
		try {
			URL imageURL = new URL("https://gss0.bdstatic.com/70cFsjip0QIZ8tyhnq/img/logo-zhidao.gif");
			BufferedImage image = ImageIO.read(imageURL);
			ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
			ImageIO.write(image, "jpg", outputStream);
			outputStream.flush();
			byte[] imageInByte = outputStream.toByteArray();
			outputStream.close();
		}catch(IOException e) {
			e.printStackTrace();
		}
	}
}

References

Imported packages in Java documentation:

• MalformedURLException
• ByteArrayOutputStream
• BufferedImage
• URL
• IOException
• Image
• ImageIO