An even bigger difference is that with jsonb, strings and numbers are converted to their equivalent PostgreSQL types. That means that strings can't contain nul

An even bigger difference is that with jsonb, strings and numbers are converted to their equivalent PostgreSQL types. That means that strings can't contain null characters or characters that violate the database's encoding rules. Consequentially, not all valid JSON documents can be stored in jsonb, which is usually fine but can sometimes introduce headaches.