When you preview the site, it’s displayed in a frame, which is not at all practical, either for debugging or for real previewing.
My tip: use a plugin that removes the url parameters.
How do I do it? By adding this line: show-toolbar@*.softr.app
Download :
FF : Neat URL – Get this Extension for 🦊 Firefox (en-US)
GC : https://chromewebstore.google.com/detail/neat-url/jchobbjgibcahbheicfocecmhocglkco