I developed this script for creating permanent/static archives of social media exports, so it's not a full solution - not a web service, expects file inputs, uses a probably incomplete list of shorteners to avoid pulling real pages - but it along with the shorteners.txt file in the same repository, iterating to find a domain not on the list, might at least inspire a solution, if it's not good for your specific cases.
I developed this script for creating permanent/static archives of social media exports, so it's not a full solution - not a web service, expects file inputs, uses a probably incomplete list of shorteners to avoid pulling real pages - but it along with the
shorteners.txtfile in the same repository, iterating to find a domain not on the list, might at least inspire a solution, if it's not good for your specific cases.