[removed] Send raw text to printer - no server requests/method calls, able to work offline, purely clientside

Question

My thorough research on the web provided me with a couple of ideas, but none of them seem to work correctly in my particular use case. Here is what I have:

1) Zebra

Answer 1

If you want to accomplish this consistently without involving the opening of popups or user prompts, you are going to need an application running on the client PC to act as mediator between your application's javascript and the client's printer.

One popular way of doing this is via a browser plugin (NPAPI). But this approach is quickly becoming obsolete as many browsers have begun to remove NPAPI support entirely (Chrome, Firefox).

Another approach is to develop a small application that runs on your client's PC which listens for websocket connections. Your web application will send the ZPL through a connection to the client's websocket server, which in turn will generate a print job.

A third approach - some printers have an internal IP address that can be sent raw ZPL. If you build your web application so that a user can configure this IP address, it would be an option to send the ZPL to that address. However, this won't work if your users are using printers that don't support this functionality.