I've been using stich from Gemini, and just plain zAi for helping redesign my website. You can use the generated code to copy and paste the design to fit your own templates, but that's a pain. Unless you are ok with using tailwind and the dozen or so classes on every element and don't want to edit anything.

What I found valuable is the design.md that was produced. It's a guide for building each component. So using these tools becomes akin to PSD to html we used do. At least that's when I find them most effective.