I'm new here and my HTML5 knowledge is quite limited.
Few weeks ago I discovered GoogleGears (I know, they are not working with it anymore) but it has a cool feature that enables webapps to "work" offline. I haven't digged enought in Gears (since I thought it could be a waste of time) but perhaps the above stated problem could be solved using this sort of addon (just telling Gears to render the image locally and after the rendering is done, upload the file). Google says that they won't be working with Gears because HTML5 is going to offer (or actually is offering) the features that GGears did back then.
I'm not sure if I'm making sense but I'll be really thankful if anyone could guide me through a correct or more effective approach. Can HTML5 solve this?
I really apologize for my english and if for some reason this was not the place to ask for this kind of help.
Thanks in advance,