According to the council it has limited adverts for food and drink high in fat, salt, and sugar (HFSS), in line with Welsh government policy.
It said the ban was complemented by broader measures to ensure adverts were ethical, transparent, and in line with authority values.
From March 2026, new obesity-tackling regulations set by the Senedd will restrict where shops and websites can display foods high in sugar, fat, and salt.
It means junk foods including pizza, chocolate, and cereal will have to be removed from shop entrances and the end of aisles, while sugary drink refills and some buy-one-get-one-free deals will also end.
The restrictions are aimed at stopping impulse buys at key selling spots in businesses with 50 or more employees, with shops found breaching them to face a fine.
At the time Health Secretary Jeremy Miles said it would help “tackle Wales’ growing obesity problem”.