When it comes to the checkout, it is not possible to customize it with coding changes as the checkout.liquid file is only available to stores using the Shopify Plus Plan. This means that it is also not possible to do wit third party apps as they do not have access to that file.
Could you tell me a little bit more about your store and why you would like to customize the checkout this way? That way I may be able to advise other options to better suit your business.
To learn more about what is possible to change on the checkout, you can see our help doc on Checkout Settings here.
Let me know if you have any other questions and I will be happy to help.
Have you created a collection on your online store and experienced an issue with adding yo...By Ollie Aug 24, 2022