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cmd/zplgfa/README.md

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+# ZPLGFA CLI Tool
+
+The ZPLGFA cli tool converts PNG, JPEG and GIF images to [ZPL](https://www.zebra.com/content/dam/zebra/manuals/printers/common/programming/zpl-zbi2-pm-en.pdf) strings.
+So if you need to print labels on a [ZPL](https://en.wikipedia.org/wiki/Zebra_(programming_language) compatible printer
+(like the amazing [ZEBRA ZM400](https://amzn.to/2OD5S4n)), but don't have ZPL-templates, you can use this free tool.
+
+## install
+
+1. [install Golang](https://golang.org/doc/install)
+1. `go install simonwaldherr.de/go/zplgfa/cmd/zplgfa`
+
+## usage
+
+So if your image file is `label.png` and the IP of your printer is `192.168.178.42` you can print via this command:
+
+```sh
+./zplgfa -file label.png | nc 192.168.178.42 9100
+```
+
+You can also use some effects, e.g. blur:
+
+```sh
+./zplgfa -file label.png -edit blur | nc 192.168.178.42 9100
+```
+
+The ZPLGFA is actually just a demo application for the ZPLGFA package,
+if you need something for productive work, look at the source and build something, depending on your needs
+
+## test
+
+You have your ZPLs, but no ZEBRA printer? You can test almost all ZPL functionality at [labelary.com](http://labelary.com/viewer.html).