Hi Product Hunt — I built Labelixa because thermal label code (ZPL and friends) has a slow feedback loop: you write commands, send them to a printer that may be in another building, and read the mistake on paper. What it does today: • Preview ZPL / EPL / TSPL / CPCL in the browser, download PNG or PDF, convert between 203/300/600 dpi. • Lint against the command catalog. The cheat sheet says per command whether it is rendered (61), or recognised but not drawn (7) — a preview is not a print, and the tool says so. • REST API with a free, keyless tier (3 req/s, 5,000 labels and 10,000 requests per month, 50 labels per request), Python/Node SDKs, a CLI and a GitHub Action. • MCP server (remote endpoint + npx labelixa-mcp): paste a label into Claude Desktop or Claude Code, ask why the barcode is cut off, and the assistant renders it, reads the diagnostics and fixes the offsets. Tested with those two clients only. • Print through a small agent on your LAN (signed binaries with checksums; the cloud never sees the printer). What it is not: a printer emulator, and I don't publish an uptime number until I have measured 30 full days from outside. I bought a Zebra GK420d and measured printed fixtures with calipers; the numbers (and the one EPL setting that clipped my next ZPL job) are in the docs. Happy to answer anything about the renderer, the MCP tools or the physical tests.

Labelixa

Preview, lint and print thermal labels — browser, API or MCP

Preview, lint and print thermal labels — browser, API or MCP