zpl to m3u conversion is mainly related to a transformation of two different media player playlist files, namely older Zune playlists (. zpl) and MP3 playlists (. m3u ). The easiest way to convert ZPL playlists to a M3U ones would be to import the first to a media player that supports both and simply save it as .m3u file afterwards. In the field of customs clearance there are also cases where shipping labels must be sent in advance by e-mail to the service provider or authorities. This can be easily automated with the gateway that is able to produce PDF-files from ZPL. Detailed informationen about the ZPL-converter can be found in the convert4print -Wiki. Simple ZPL2. Simple Project to help in building ZPL2 strings for printing barcodes with Zebra or compatible label printers. Free software: MIT license. Documentation: https://simple-zpl2.readthedocs.io. A PHP example that uses a POST request to convert a ZPL string to a PDF file 2021-03-09 20:28:45.