Starting over on a site usually means hunting down every setting and clearing it one by one. The reset panel gathers them all in one place so you can clear exactly what you want, nothing more.
Where to find it
Go to Appearance, Loupely Canvas. The reset panel is at the bottom of the settings screen, below the code boxes. It is separate from the save button and requires its own confirmation step, so a misclick cannot trigger it.
What you can wipe
The panel lists every item the theme has stored as a checkbox: the global header, footer, head code, and body code, the post card and single post templates, the archive header, the 404 box, and the theme settings such as the find and replace toggle and the editor preview setting. When Canvas Pro is active, the list extends to cover Pro-managed content too: snippets, header and footer sets, templates, injections, and custom post type definitions, each as its own item. Check what you want to clear and leave the rest.
The confirmation step
The Reset button does not activate until you type a short confirmation phrase into the field above it. The phrase is shown on screen. This is the only guard against an accidental wipe, so read it before you type.
What reset does not touch
Posts, pages, categories, tags, menus, media, and users are never touched by the reset panel. Those live in WordPress itself, not in Canvas. The panel only clears what Canvas and Pro stored in options and custom post types they own.
After a reset
The migration offer from Loupely Canvas Lite also resets, so if you had previously dismissed it or already imported, the offer can appear again after a full reset. This is intentional: a reset is a fresh start, and the offer is part of the fresh-start experience for a site that came from Lite.