It is much better than screen shot since you can pick a single image from very large code files. More than 40 programming languages can be highlighted and picked.

Convert images to ASCII hex. Create ZPL code in PHP that is easy to read. Simple wrapper for PHP sockets to send ZPL to the printer via raw TCP/IP (port 9100).

into byte code, so it can run more quickly. Hack is basically an extension of the PHP language with built-in static typing, a feature found in more traditional programming languages such as C/C++ ...