I would like to save a webpage-project with all its sources in a single folder. Is there a functionality within Sitely to do that? I know that I can embed videos into the project, but that is not what I need. I would just want to get all sources from where they may be loaded to be collected into a single folder together with the project file, so that I can archive the project safely to an external disk.
Hi @vheun, welcome onboard! 
In your case @vheun it will come down to thoughtful file management.
From my experience, Sitely doesn’t have the ability to scoop up all of your used resources into the same project folder. So if you don’t want to embed your resources into Sitely, then I would create a folder for your Sitely project and in that same folder I would have your resources you are attaching too the Sitely project.
I would think you would want your resources (videos, etc…) placed in the folder first before attaching it to your Sitely project.