Use the following schema to request uploaded files:

http(s)://<bucket-name>.<location>.cloud.gcore.lu

You can find the hostname on the Storages tab in the Details section.

For example, your storage is in the Global-1 location. You've created a bucket mybucket and uploaded picture.png there:

/mybucket/picture.png

Global-1 location hostname:

s-ed1.cloud.gcore.lu

URL to request the file from the storage:

http://mybucket.s-ed1.cloud.gcore.lu/picture.png

S3 storages support both HTTP and HTTPS protocols.