QZ Tray

Overview

QZ Tray is a desktop bridge that lets browser-based software print to local printers and communicate with attached devices. It is a focused fit for developers building web workflows around nearby hardware, rather than organizations seeking centralized print management.

Its broad format and connection support is compelling for that job, and free use is possible with warnings. The key trade-offs are that silent printing requires signed messages and only one instance can run on a machine.

Key features

QZ Tray prints PDF, PNG, HTML, PCL, ESC/POS, EPL, ZPL, SBPL and FGL from a browser. That breadth serves both document output and specialized printer workflows, including label printing. Compatible brands include Zebra, SATO, Epson, Citizen, Star, Boca and Dymo.

It also communicates with hardware over serial, HID, USB, socket and file I/O. A JavaScript connector exposes printing and device communication to web clients, making QZ Tray useful when an application needs to interact with equipment beyond ordinary browser printing.

Free use and demonstrations come with warnings. Removing print-dialogue warnings and enabling silent printing requires message signing with a certificate and private key. QZ says signing keys are generated in the customer's browser and it does not receive the private key; teams still need to account for signing when designing a silent-printing workflow.

Pricing

QZ Tray can be downloaded and used free, with warnings; the maker also offers a free demonstration. That is a practical starting point for evaluation or workflows that can tolerate the warnings. Free public community support is best-effort.

Sponsored Support costs nothing, billed annually with renewal at a reduced rate, and requires special qualifications. It includes a one-year trusted key pair, critical bug-fix support, software updates, 48-hour email support and phone support by appointment.

Premium Support costs $749 a year, billed annually with renewal at a reduced rate. It adds a one-year trusted key pair, critical bug-fix support, software updates, 48-hour developer email support and phone support by appointment. This is the paid fit for teams that need signing credentials and a defined support response.

Company Branded + Premium Support costs $3,499 a year, billed annually with renewal at a reduced rate. It includes a one-year trusted key pair, critical bug-fix support, software updates, 48-hour email support, phone support by appointment and a custom build portal. The branded build option is aimed at companies that need a tailored distribution path; it costs substantially more than Premium Support.

Platforms

The desktop application runs on Windows, macOS and Linux, including Intel and ARM or Apple Silicon systems. QZ Tray is also associated with web, Android and iOS support, and mobile printing is supported. Deployment is on-premises, which suits local device connections rather than a cloud-only installation.

Who it's for

QZ Tray is strongest for developers and organizations whose web clients must print locally or exchange data with attached hardware. Its mix of desktop operating systems, printer formats and device interfaces gives those workflows room to span different equipment. It is less suitable when an organization needs multiple QZ Tray instances on one machine: its localhost WebSocket connection uses a single port, so only one instance can run at a time.

Pros and cons

• Broad printing coverage: Nine supported formats and compatibility with named printer brands suit varied browser-based output needs.
• Device communication beyond printers: Serial, HID, USB, socket and file I/O support makes it useful for web clients tied to local equipment.
• Free entry point: Download, use and demonstration are possible without paying, but warnings remain.
• Signing is required for silent printing: Teams seeking warning-free output must configure certificate-based message signing.
• One-instance limit: A machine cannot run multiple QZ Tray instances, which constrains deployments that need separate local connections.

Alternatives

For a broader comparison, browse Print Management Software.

Choose ezeep if its free plan's support for up to 10 users, one connector, unlimited user print jobs and 50 API pages per month per organization better matches your needs. Choose PrintNode if a usage-capped starting point suits you: its free Lite plan allows 50 prints per month on one computer, with no charge or card details. Consider LRS VPSX as another paid print-software option.

Pharos Uniprint is an on-premises print-management option for colleges and universities. PrinterLogic is another paid option, with pricing shown for print-queue bands. YSoft SAFEQ Platform offers modular print management. MyQ X has a free plan and a paid Enterprise tier. Synappx Cloud Print uses a pay-as-you-go subscription.

Verdict

Choose QZ Tray when a web client needs to print locally or communicate with attached devices across its supported formats and connection types. Its breadth and free entry point make it a focused solution for those workflows; look elsewhere if you need multiple QZ Tray instances on one machine, or if silent printing without signed messages is a requirement you cannot accommodate.