I use a screensaver on my Mac, and it seems like it refuses to recognise the image in ~/Library/Application Support/Artpip/images as an inmate without the .jpg

I use a screensaver on my Mac, and it seems like it refuses to recognise the image in ~/Library/Application Support/Artpip/images as an inmate without the .jpg extension. Is there any chance of you changing the images to use a .jpg extension, so I can set my screensaver to use your folder automatically.