[Feature Request] Rename the file before downloading

[Joshua-Page]

Hi, I'm using your app for blog images and would love to be able to set the name for my file before downloading it (I download multiple copies at different sizes)
I'd like to be able to just add the size of the image to the end when downloading for example
image 900
image 700
image 1400
etc

Not sure if this is feasible but would love to see it! Thank you