qzind/tray
Browser plugin for sending documents and raw commands to a printer or attached device. observed · 2026-09-03
Health v2 · maintenance only
81/100
- Activity 100
- Release rhythm 46
- Longevity 100
Flags: no_license
How is this computed?
round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10) — computed 2026-09-03. Adoption (stars, forks) is never an input.
- gap_med: 296
- age_days: 3849
- days_rel: 151
- days_push: 0
- n_releases_24m: 2
Adoption not part of the score
1051 stars · 345 forks observed · 2026-09-03
What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded
QZ Tray is a cross-browser, cross-platform desktop plugin that lets web pages send documents (PDF, HTML, images) and raw printer commands (ZPL, EPL, ESC/POS, ESC/P, etc.) to printers and attached devices. It also supports serial, HID, USB, socket, and file communication with hardware like scales, bridging the gap between browsers and local peripherals.
Use cases
- print barcode labels from a web app to a Zebra thermal printer
- send raw ESC/POS commands to a receipt printer from the browser
- print PDFs silently without print dialogs from a web application
- communicate with a USB or serial scale from a web page
- print HTML or image documents to any installed printer from JavaScript
- send ZPL label data to a thermal printer from a web-based POS
- read from HID devices in a browser-based kiosk app
When to choose
- you need browser-based printing to thermal, label, or receipt printers with raw command languages
- you need silent printing without user pop-ups in a web application
- your web app must talk to local serial, USB, or HID hardware
- you need cross-platform (Windows/macOS/Linux) printer access from JavaScript
When to avoid
- you only need standard browser printing via window.print()
- you want a purely server-side printing solution with no client software install
- you need a fully free solution without any commercial licensing for silent printing
- your users cannot install desktop software or trusted certificates
Facets
plugin · maturity active
sdk developer-tools file-system hardware web-development cross-platform windows browser jvm cross-platform raw-printing zpl escpos epl thermal-printer barcode-labels hid serial-communication usb silent-printing receipt-printing browser-to-hardware printing automation macos linux javascript desktop
10 sources
- readme: https://github.com/qzind/tray · fetched 2026-09-03 · 36a6c93b560e
- homepage: https://qz.io · fetched 2026-08-29 · a20be5929721
- site_page: https://qz.io/docs · fetched 2026-08-29 · 7a2407a5268f
- site_page: https://qz.io/about · fetched 2026-08-29 · 0b350d981f61
- site_page: https://qz.io/docs/getting-started · fetched 2026-08-29 · 0f211dff8520
- site_page: https://qz.io/docs/signing · fetched 2026-08-29 · 298efa6746c7
- site_page: https://qz.io/docs/what-is-raw-printing · fetched 2026-08-29 · de9d46bcafa2
- site_page: https://qz.io/docs/company-branded · fetched 2026-08-29 · f2d66f28212a
- site_page: https://qz.io/docs/licensing · fetched 2026-08-29 · 1535bf2cfa57
- site_page: https://qz.io/docs/company-branded-service-terms-of-use · fetched 2026-08-29 · ffd8ca6fd6e6
Member repositories
| Repository | Role | Health v2 |
|---|---|---|
| qzind/tray | main | 81 |
For agents
Data as of 2026-08-30T08:39:29.467469+00:00 · Report a problem