I hope you're okay with me suggesting features here. My idea is if you could download a zip of the loaded images, discluding the blacklisted ones so you could reuse ones you had previously!
No problem witht that :3
Seems possible, I will try to add this to a next version if I can make it work.
Nevermind, CORS issues make this impossible to do (or it would need a very tricky workaround I haven't found), that's a shame.