Best practices for automated invoice PDF generation and barcode rendering in inventory ERP

Hi everyone,

We are developing a custom inventory management and ERP billing module that automates the generation of GST-compliant invoices and dispatch slips containing dynamic Code 128 / QR barcodes.

We want to ensure

when these documents are rendered and printed via Adobe Acrobat Reader across different client environments. 

Could the community share best practices regarding:
1. Recommended font embedding standards (TrueType vs Type 1) to prevent barcode distortion during client-side Acrobat rendering.
2. Standard DPI and vector scaling settings to ensure barcode scanners can reliably read Code 128 barcodes directly from printed PDFs.
3. Managing silent print or auto-print parameters when triggering PDF print queues from web-based ERP systems.

Any technical recommendations or configuration tips would be greatly appreciated!