Find a Shopify Collection IDs
Navigate to your Collections:
Go to your Shopify admin panel and click on Products > Collections.
Select the Collection:
Click on the specific collection you want to retrieve the ID for.
Locate the Collection ID:
Check the URL in your browser's address bar. It will look something like this:
https://my-shop-name.myshopify.com/admin/collections/987654321
The number following
/collections/
is your Collection ID. In this example, the Collection ID is 987654321.
Applying a Collection ID to Checkout Product Recommendations
Open Shopify Checkout Editor:
Access your Shopify Checkout Editor and add a Product Recommendation or Line Item Recommendations app block.
Select Recommendation Type:
From the Recommendation Type drop-down menu, choose Most Popular, Trending, or New Arrivals.
Enter Collection IDs:
Input your Collection IDs in the provided field, separating multiple IDs with commas.
Save Your Changes:
Click Save to apply the changes.