Overview
QZ Tray is designed to provide a secure connection between web-based applications and locally installed printers. To accomplish this, it relies on operating system features that allow applications to communicate directly with hardware devices such as printers.
Because of these requirements, QZ Tray is only supported on Windows, macOS, and Linux, which are the primary desktop operating systems that provide the necessary access to printer drivers and system-level printing services.
Why Are These Operating Systems Supported?
Direct Access to Printers
Windows, macOS, and Linux allow applications to:
Detect installed printers
Access printer drivers
Send print jobs directly to printers
Configure printer settings
Control label dimensions and formatting
QZ Tray uses these capabilities to ensure labels print correctly and efficiently.
Reliable Printer Driver Support
Most thermal printer manufacturers provide drivers specifically for:
Windows
macOS
Linux
This allows QZ Tray to communicate consistently with supported printers and maintain accurate printing behavior.
Desktop Application Compatibility
QZ Tray runs as a local desktop application that communicates with both the browser and the operating system. Desktop operating systems provide the environment needed for QZ Tray to manage print jobs securely.
Why Doesn't QZ Tray Support Mobile Devices?
Mobile operating systems such as:
iOS
Android
have stricter security restrictions that limit direct communication with printers and other local hardware.
As a result, QZ Tray cannot provide the same level of printer control available on desktop systems.
Why Doesn't a Web Browser Handle Printing Directly?
Modern browsers intentionally restrict direct access to local devices for security reasons.
Without QZ Tray, websites would be unable to:
Detect installed printers
Select printers automatically
Control thermal label formatting
Send print jobs directly to hardware
QZ Tray bridges this gap while maintaining security and reliability.
Benefits for AccelerList Users
By using QZ Tray on supported operating systems, sellers can:
Print Faster
Send labels directly from AccelerList without downloading files.
Improve Accuracy
Ensure labels print with the correct size, orientation, and formatting.
Support High-Volume Workflows
Handle large batches of labels efficiently with minimal manual intervention.
Work with Popular Printer Brands
Use supported printers such as:
Dymo
Zebra
Brother
Rollo
Standard laser and inkjet printers
Summary
QZ Tray only supports Windows, macOS, and Linux because these operating systems provide the hardware access and printer driver support necessary for direct printing. This allows AccelerList users to print labels accurately, efficiently, and securely while maintaining compatibility with a wide range of printers.