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Presto

Presto lets HTTPS web apps print to local and network label / RFID printers that browsers can’t reach directly. A small native service (prestod) runs on the machine; web pages connect over secure WebSocket (wss://127.0.0.1:31075/ws), submit raw printer-language jobs (ZPL first-class, plus EPL/TSPL/SBPL/CPCL/ESC-POS), and get real job and per-label RFID-encode feedback — not fire-and-forget.

Two parts

Section titled “Two parts”
Part What it is Audience
Bridge (prestod) The on-machine daemon + web UI + client libraries. Ships as Windows MSI and Ubuntu .deb. Web-app developers, site IT, floor operators
Presto Cloud Intrasys-run licensing authority, issuance backend, and billing (Stripe). Licensing admins, customer org admins

What’s distinctive

Section titled “What’s distinctive”
  • RFID as a first-class API — per-label ~RV encoded/voided accounting, ^RS retry/void, ^HR calibration. No competing bridge does this.
  • Job state machine with verification level — spooler / printer / rfid; never claims more than the transport reported.
  • Label Designer — visual ZPL editor with RFID inlay overlays and server-side preview.

Next steps

Section titled “Next steps”