What this means
The page picker chooses what the middle preview shows and which layout you are editing.
Store pages versus templates
A store page contains information, such as the title and written content of “About us.” A theme template controls how that kind of page is arranged. Editing a shared product or article template can affect many products or articles using it.
Home page
The home page has its own layout. Its template sections normally affect the storefront home route.
Product, collection, blog, and article pages
These previews combine real store information with a theme layout. Changing a product's name or price belongs in Products; changing where the title, gallery, or buy button appears belongs in the theme editor.
Add a page or blog to the theme
Use the page picker and add option to include an existing Online Store page or blog in this theme's editable page list. The theme must support the required page or blog template.
Remove a page or blog from the theme
Removing it from the theme does not delete its saved content from Online Store → Pages or Blogs. It removes that item from this theme's page list and layout state.
Delete a custom theme page
If the picker says Delete page for a theme-created custom page, the deletion stays unsaved until you press Save. Read the confirmation carefully because this is different from merely removing a saved Online Store page from the theme.
Preview navigation
Clicking links inside the preview can move to another store route and update the selected editor page when a matching page exists. It still uses the private preview session.
Simple example
Changing the description of the “Shipping policy” page belongs in Online Store → Pages. Changing the spacing and heading style used to display normal pages belongs in the page template inside the theme editor.
What you need to know
- Content and layout are separate.
- Shared-template changes can affect several resources.
- Removing an existing page from a theme does not delete its saved page content.
- The preview uses draft state; public customers use the published design.