Almost perfect Rated 4 out of 5 stars

Really happy to see this working in the latest FF versions again it’s definitely the best APNG editor available BUT it REALLY needs to implement the greyed out option and be able to load an existing APNG animation — people just don't keep old .animat workfiles after a apng file is made, but there's still a good chance you'll want to edit it later, or you could want to work on a file created by a different APNG editor (I have 2 others on my systems), so PLEASE let us load our existing APNG files, PLEASE!