Convert to SIXEL Online Tool.
The SIXEL file type has fallen out of favor with most people. It's popularity ratings are pretty low at this point, but you should still know that this type of file was used in the 1980s to help printers and terminals do the kind of work that they needed to do at the time. There are groups of true believers who still cling to using the SIXEL files to get some of their work done, but they have certainly fallen out of favor with most people. That said, you may still see some benefits from this type of file from time to time. You can learn from it in terms of how you are able to get the kind of files that you commonly see on your computer today. Much of what led up to that came from what the SIXEL files made possible in the early days. Thus, it is worth knowing about regardless.