interesting.
I use the linux version, it works, but here are some suggestions, no idea if this works on windows already:
* keep the directory where I loaded a file also in memory, not only the last file (for animations)
* show thumbnails for folders, not filenames, it's images we are looking at after all
* give the option to select a save folder, maybe optional
* give the option to remove the timestamp from the filename (more for an options menu
* give the possibility to change the output filesize canvas and also keep higher resolutions