How to bulk convert WebP to JPG (Tutorial)

If you have a large collection of images in WebP format, converting them to JPG in bulk can be a game-changer. WebP, developed by Google, is known for its efficient compression and high quality. However, it often faces compatibility issues with various technologies.

This can be particularly challenging for Java developers who need to integrate WebP images into their applications. Converting these images to JPG ensures broader compatibility and smoother integration.

In this article, I’ll guide you through the process of using Java to convert WebP files to JPG format with JDeli, ensuring your images are accessible.

Mass convert WebP to JPG using Java

1. Download the JDeli trial jar.
2. Process image if needed (scale, sharpen, lighten, watermark, etc)
3. Write out BufferedImage as JPG image file

BufferedImage bufferedImage = JDeli.read(new File("webpImageFile.webp"));

// Read WebP image into Java


bufferedImage = operations.apply(BufferedImage bufferedImage);

// Process image (Optional)


JDeli.write(bufferedImage, "jpg", new File("jpgImageFile.jpg"));

// Write out BufferedImage as JPEG image file

Export WebP to JPG in one line of code

With the JDeli.convert() method you can save Webp as JPG in just one line of code.

Using File

JDeli.convert(File inFile, File outFile);

JDeli.convert(InputStream inputStream, OutputStream outputStream, "jpg");

byte[] outputData = JDeli.convert(byte[] inputData, "jpg");

JDeli.convert(File inFile, EncoderOptions outputOptions, File outfile);

How to bulk convert WebP to JPG from the command line

Mass convert WebP to JPG using command line or bash, bat, and PowerShell scripts. This method also enables JDeli to be invoked from any programming language that supports creating a child process.

java -jar jdeli.jar –convert jpg "inputFileOrDir" "outputDir"

In this tutorial you learned how to convert WebP to JPG in bulk, you can also have a look at our tutorials for more format conversions.

// Read an image
BufferedImage bufferedImage = JDeli.read(dicomImageFile);

// Read an image
BufferedImage bufferedImage = JDeli.read(heicImageFile);

// Write an image
JDeli.write(bufferedImage, "heic", outputStreamOrFile);

// Read an image
BufferedImage bufferedImage = JDeli.read(jpegImageFile);

// Write an image
JDeli.write(bufferedImage, "jpeg", outputStreamOrFile);

// Read an image
BufferedImage bufferedImage = JDeli.read(jpeg2000ImageFile);

// Write an image
JDeli.write(bufferedImage, "jpx", outputStreamOrFile);

// Write an image
JDeli.write(bufferedImage, "pdf", outputStreamOrFile);

// Read an image
BufferedImage bufferedImage = JDeli.read(pngImageFile);

// Write an image
JDeli.write(bufferedImage, "png", outputStreamOrFile);

// Read an image
BufferedImage bufferedImage = JDeli.read(tiffImageFile);

// Write an image
JDeli.write(bufferedImage, "tiff", outputStreamOrFile);

// Read an image
BufferedImage bufferedImage = JDeli.read(webpImageFile);

// Write an image
JDeli.write(bufferedImage, "webp", outputStreamOrFile);