The following documentation comment has been logged on the website: Page: https://www.postgresql.org/docs/13/app-pgdump.html Description:
Please consider entering a suggested name extension for pg_dump files in custom format. For example ".pgdump". Nobody would have any doubts that this is a database backup copy. Over the past 20 years, I have seen many times that .dump files were treated by various administrators as some minor temporary files. The abbreviation "PG", on the other hand, is quite recognizable as PostgreSQL. And such less competent administrators, things related to PostgreSQL do not touch and the backups will be safe.