Which is the Default Template file for collections in liquid?

Topic summary

Creating a new collection template in Shopify’s Debut theme to differentiate layout from existing collection pages. The author asks which Liquid files need to be duplicated and how to configure the store to use the new template.

Key questions:

  • Which specific Liquid files should be copied to create a custom collection template?
  • What settings or theme configuration are required to assign the new template to collection pages?

Context:

  • Liquid is Shopify’s templating language; “collection” pages display grouped products.
  • A “template” controls the layout and structure of those pages.

Current status:

  • No instructions, file names, or configuration steps provided by others.
  • No decisions or outcomes; the request remains open and unresolved.
Summarized with AI on February 8. AI used: gpt-5.

I want to create a new collection template so that I can distinguish the layout a little from my other collection pages. So far all my collection pages are using the default template. I want to create a new template in liquid and want to know how I can tell edit the file to make it use the new template that I will be creating.

Which liquid files am I supposed to duplicate to achieve this? And what are the settings that I need to configure to achieve this?

I’m using debut theme for my store.