Responsive images on the London theme?

Hi everyone,

I’m using the London theme for my portfolio website: https://www.samuelzeller.ch/
The images I upload for my projects are usually 1500px wide (sometimes 1800px) and I display them at max 1500px width. Portraits are 1000px or 1200px high.

For mobile users I would like to serve smaller image sizes using Ghost responsive images How to use responsive images in Ghost themes (like how it’s implemented in the Casper theme)

But I don’t quite understand how to implement this solution in conjunction with the Ghost V2 visual post editor. I’m using Ghost(Pro).

Would I still be able to upload images normally from the post editor and not using markdown/html blocks?