QZ Tray is a lightweight desktop application that enables secure, direct printing from web-based applications to local printers and connected devices without browser limitations. It supports raw printing, barcode printing, receipt and label printers, and works seamlessly across Windows, macOS, and Linux. This is a custom QZ Tray build configured without self-signed certificate warnings, allowing users to simply install it on their desktop and start printing immediately — no additional security prompts or manual setup required