It’s easy to do with this query. That’s all I have to say on this topic for now.
SELECT table_schema || '.' || table_name AS full_table_name,
pg_size_pretty(pg_total_relation_size('"' || table_schema || '"."' || table_name || '"')) AS total_size,
pg_size_pretty(pg_relation_size('"' || table_schema || '"."' || table_name || '"')) AS data_size
FROM information_schema.tables
WHERE table_schema = 'inblock'
AND table_type = 'BASE TABLE'
ORDER BY pg_total_relation_size('"' || table_schema || '"."' || table_name || '"') DESC;