Thank you all.
File size or pixels?
If it’s pixels, load it using display.newImage, and you can find the size by the .width and .height properties.
If it’s file size, you can read the event.bytesTransferred property in your download listener.
Thank you nick_sherman, 
I will try.
File size or pixels?
If it’s pixels, load it using display.newImage, and you can find the size by the .width and .height properties.
If it’s file size, you can read the event.bytesTransferred property in your download listener.
Thank you nick_sherman, 
I will try.