tpt-postgres Tanel Poder's Performance & Troubleshooting scripts for PostgreSQL More to see here soon, but for now, enjoy the Postgres pure-SQL QR code generation script pqr.sql under the demos directory. Example usage: psql -qf pqr.sql -v payload='Hello, World!' More running instructions and blog entry here: https://tanelpoder.com/posts/generate-qr-code-with-pure-sql-in-postgres/