2kb by default, configurable per-table with the toast_tuple_target storage parameter if you want more control: https://www.postgresql.org/docs/current/sql-creat

2kb by default, configurable per-table with the toast_tuple_target storage parameter if you want more control: https://www.postgresql.org/docs/current/sql-createtable.html https://www.postgresql.org/docs/current/sql-createtable.html