Программа на Python

 import sys 
from PyQt5.QtWidgets import QApplication, QWidget, QLabel, QVBoxLayout 
from PyQt5.QtGui import QPixmap, QPainter, QPaintEvent, QMouseEvent, QColor, QPen, QImage 
from PyQt5.QtCore import Qt, QPoint 
from PIL import Image 
 
 
class TransparentImageOverlay(QWidget): 
    def __init__(self, image_path): 
        super().__init__() 
        self.setWindowFlags(Qt.WindowStaysOnTopHint | Qt.FramelessWindowHint) 
        self.setAttribute(Qt.WA_TranslucentBackground) 
         
        # Загрузка изображения 
        img = Image.open(image_path).convert("RGBA") 
        width, height = img.size 
        qimg = QImage(width, height, QImage.Format_RGBA8888) 
        img_data = img.load() 
        for y in range(height): 
            for x in range(width): 
                r, g, b, a = img_data[x, y] 
                color = QColor(r, g, b, a) 
                qimg.setPixel(x, y, color.rgb()) 
        qpixmap = QPixmap.fromImage(qimg) 
         
        layout = QVBoxLayout() 
        label = QLabel(self) 
        label.setPixmap(qpixmap) 
        layout.addWidget(label) 
        self.setLayout(layout) 
     
        self.dragging = False 
        self.offset = None 
    def setOpacity(self, opacity_value): 
        self.setWindowOpacity(opacity_value) 
     
    def mousePressEvent(self, event: QMouseEvent): 
        if event.button() == Qt.LeftButton: 
            self.dragging = True 
            self.offset = event.globalPos() - self.pos() 
     
    def mouseMoveEvent(self, event: QMouseEvent): 
        if self.dragging: 
            new_pos = event.globalPos() - self.offset 
            self.move(new_pos) 
     
    def mouseReleaseEvent(self, event: QMouseEvent): 
        if event.button() == Qt.LeftButton: 
            self.dragging = False 
     
 
if __name__ == "__main__": 
    app = QApplication(sys.argv) 
    overlay = TransparentImageOverlay('example.png') 
    overlay.show() 
    overlay.setOpacity(0.7) 
    sys.exit(app.exec_())