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Zebra LP-series thermal label printer WebUSB library

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WebZLP

Web USB library for communicating with EPL or ZPL printers.

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Demo

See the demo that runs in your browser. Note that you will need a browser that supports WebUSB, such as Chrome, Edge, Opera, Chrome on Android, etc.

The demo dynamically compiles the typescript in the browser so can take a minute to spin up.

Want to see more bells and whistles? Or maybe you just want to play around with a printer you have? Try the advanced demo for more options and controls. The code is a little harder to follow because of the additional things going on.

Docs

This repo contains some docs and findings related to Zebra label printers and their various quirks. I'm interested in collecting as much of this information as I can as I just think they're neat. If you have something to add please feel free to open an issue!

Local development

To facilitate local dev you can spin up a local static webserver that will end up operating very similar to GitHub Pages. Clone the repo, run npm ci and npm run serve-local. On the first time this will run mkcert and save the certificate to your machine store, subsequently it will re-use this same cert. Open the server at https://localhost:4443/demo/ to test the app.

  • npm run lint to run the linter rules.
  • npm run test to run the tests.
  • npm run build to run the typescript compiler.

Copyright information

Much of the technical documenation and information comes from Zebra Technologies Corporation's public documentation and an amount of trial-and-error from working with an array of LP2844 printers with assembly dates between 2000 and 2008.

Zebra have graciously made this information public through reference documentation available on their website. When in doubt please seek their information! The company makes robust printers that continue to be well supported. The latest available printers they manufacture are compatible with EPL command sets dating back to the 90s. I can't recommend them highly enough for any integrator concerned with making sure their systems continue to work into the future.

Additional Credits

  • Binaryfox for significant help with WebUSB.
  • Metafloor for the very handy zpl-image library.

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Zebra LP-series thermal label printer WebUSB library

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