Write an image to file – Java BufferedImage ImageIO

In the following tutorial we demonstrate how to write an image to a file. We can write and convert different images. In this example we read a JPG file and convert the image to a PNG, GIF and BMP file.

How to Write an Image in Java

This example shows how to write an image in java. We write the file in multiple formats.

• JPEG – Joint Photographic Experts Group.
• PNG – Portable Network Graphics.
• GIF – Graphic Interchange Format.
• BMP – Windows Bitmap Image.
• TIFF – Tagged Image File Format.

package com.memorynotfound.image;

import javax.imageio.ImageIO;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.IOException;
import java.net.URL;

public class WriteImageExample {

    public static void main(String... args) throws IOException {

        // read image from folder
        URL input = new URL("https://memorynotfound.com/wp-content/uploads/java-duke-to-jpg.jpg");
        BufferedImage image = ImageIO.read(input);

        ImageIO.write(image, "png", new File("/tmp/duke.png"));
        ImageIO.write(image, "gif", new File("/tmp/duke.gif"));
        ImageIO.write(image, "bmp", new File("/tmp/duke.bmp"));
        ImageIO.write(image, "tiff", new File("/tmp/duke.tiff"));

    }

}

Converted Images

To demonstrate the result, we added the following table.

duke.jpg (original)	duke.png	duke.gif	duke.bmp
Size: 12KB	Size: 46KB	Size: 12KB	Size: 423KB

References

• ImageIO JavaDoc
• BufferedImage JavaDoc