Extract windows 10 lock screen images to your desktop

It seems the location for the wallpapers has changed in (at least) recent Windows 11 builds, you may need to check both of these location:

Windows 10
\AppData\Local\Packages\Microsoft.Windows.ContentDeliveryManager_cw5n1h2txyewy\LocalState\Assets

Windows 11
\AppData\Local\Packages\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\LocalCache\Microsoft\IrisService

This small toy extract all Windows 10 lockscreen images to a folder on your desktop, and adds a .jpg file extension for easy viewing.

usage:

• Download the jar file at the end of this document to a folder of your choosing
• Execute from a command prompt with ‘java LockscreenExtract’
• Your desktop now has a folder called ‘Extract’ with your images

import java.io.File;
import java.io.IOException;
import java.nio.file.DirectoryStream;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;

public class Main {

    private static String OFFSET_DIR = "\\Packages\\Microsoft.Windows.ContentDeliveryManager_cw5n1h2txyewy\\LocalState\\Assets";

    /**
     * Extract the windows lockscreen wallpapers to the desktop, and gives the files an extension to make them
     * viewable. Extraction is done for files larger then 100.000 bytes, so we end up with the actual wallpapers
     * while skipping thumbnails and other small stuff.
     * @param args
     * @throws IOException
     */
    public static void main(String[] args) throws IOException {
        String basedir = System.getenv("LOCALAPPDATA");
        String sourceHandle = basedir + OFFSET_DIR;
        String targetHandle = System.getenv("USERPROFILE") + "\\Desktop\\Extract";
        Path sourcePath = Paths.get(sourceHandle);
        Path targetPath = Paths.get(targetHandle);
        System.out.println("Source   :" + sourceHandle);
        System.out.println("Target   :" + targetHandle);
        if (!Files.exists(targetPath)) {
            Files.createDirectory(targetPath);
        }
        try (DirectoryStream<Path> stream = Files.newDirectoryStream(sourcePath, "*")) {
            for (Path entry : stream) {
                // Require at least 100k bytes to filter out icons and stuff
                File checkHandle = new File(String.valueOf(entry));
                if (checkHandle.length() > 100000) {
                    // rename to jpg to make the image accessible
                    String targetName = entry.getFileName() + ".jpg";
                    Path copyTo = Paths.get(targetPath + "\\" + targetName);
                    // only new files we dont have yet
                    if (!Files.exists(copyTo)) {
                        Files.copy(entry, copyTo);
                        System.out.println("nieuw:   " + entry.getFileName());
                    } else {
                        System.out.println("skipped: " + entry.getFileName());
                    }
                }
            }
        }
    }
}