Hi Elpea, thanks for your feedback!
The app is built using the electron framework, and since it packs the chromium engine within the app, that's what results in a larger file size while providing a nice experience.
The app let's you view any site or your local media files in a floating window that stays on top. These windows can be clicked through and their opacity changed to best fit your workflow.
You just enter the url or drag your file into it and it'll open a window with just the specified site or file, so there are no distracting controls in the way and you have a clean workspace.
There are screenshots of the app that show how it looks like on an actual desktop, but you're absolutely right a video would be way better! I'm currently working on making a video for it, so I'll try to finish and upload it soon.
There are 2 separate parts, the floating window and the Slate console panel. The panel allows you to have full control over the window and all it's settings. Each floating window has a separate Slate panel, this was a choice that made so you can individually customize each window separately to best fit your needs. If you want a particular floating window to be click-through and at half the opacity, while the other to not be click-through, you can do this with Slate.
Hope you found this helpful and I hope you have a nice experience with Slate in your workflow!
Cheers,
Ayan