This filter adds a watermark to the image. It can be positioned inside the image with the alpha channel specified and optionally resized based on the image size by specifying the ratio.

The “watermark” filter takes four parameters: the URL of the watermark image, the x and y coordinates where the watermark should be placed on the image (in pixels), and the opacity of the watermark (0-100). In the example URL above, the watermark is placed at the top-left corner of the image (x=0, y=0) with an opacity of 50%.

You can also adjust the size of the watermark by adding additional parameters to the filter. For example, you can add a fifth parameter to specify the width of the watermark, and a sixth parameter to specify the height of the watermark

Normal Image:

Image with Logo:,0,0,50,100,100)