Hi All, does anyone know how to convert PDF file into ZPL file? Using REST API's. Please, let me know if anyone have idea about it.

what are you trying to achieve, what is the reason for needing ZPL? And what do you mean by using REST APIS, are you looking for a third party service to use to do the conversion?

probably sending to some zebra hardware for printing. google pdf to zpl api, buy the library and make a rest service and host it.

some of the newer models support sending PDF file directly to the device