It's a neat idea. I think it needs some feedback wheb you click to choose. I asked for an article in mobi as a test, and it was 30 seconds for it to give it to me. I thought it was borked.

Maybe a "queuing" or something? It let me do other things until it was ready, like download the epub.

Were you logged in or not?

If you were not logged in, then the conversation happens on the Kindle itself so yeah it's gonna be slow.

If you were logged in and the "backend mode" was enabled, then the delay will most likely be fetching the article images, compressing them and converting them to jpeg on the backend, but there's a setting to choose if you want to embed images or not.

I wasn't logged in, and it was just my Android phone. I was testing.

I know what the delay was for, I mentioned it in my original reply. My point is, there's no visual indicator of what's happening. You click the button, and you don't know if the button's been clicked. The person wonders, "Did I miss?" So I, as anyone would, clicked again after a moment. And again. Still no indication.

I then moved on, looked at other options, clicked the epub, downloaded that, then the mobi option popped up.

Again, it looks neat. I'm just saying "put some feedback to indicate the button press worked", especially if it's an op which can take some time. It's standard UI stuff.

Good luck BTW, seems like a nice project.

It usually takes less time than that with backend mode on, but yeah you're right I should put some kind of an indicator for it.

Thanks for the feedback and the compliment!

Have you tested it with Kobo devices?

No, I only have a Kindle, but if it's compatible with the Kindle browser then it may be compatible with Kobo as well.

If you have a Kobo device can you try it please?