The third program is a variation on the good old Microsoft Windows terminal emulator. Go to to read more about ImageMagick and to download it for your Linux, Windows, or Mac OS box. ImageMagick has been around for a long time: 28 years, according to Wikipedia. To use the GUI instead of the command line, instead of using the 'convert' or 'magick' command, type this simple command: Or, if you have a newer version of ImageMagick installed: To convert a file from JPG to PNG, for example, you type this command: ImageMagick is not as intuitive as the GUI-oriented products, but it's still pretty easy to use. STOP THE PRESSES! ImageMagick now has a GUI! Keep reading. I recommend Paint.NET if you have Windows, or Krita for Linux, Mac OS, and Windows.) With a GUI-oriented tool, you open a graphics file, do your editing, and then select Export or Save As to save it in a different format. ( Aside: For those who can't afford PhotoShop, there are many alternatives. Many people will prefer a GUI-oriented tool like PhotoShop. Like pandoc, ImageMagick is a command-line-only tool (No longer true! Keep reading). And even more, it can be used to create image files on its own. What's more, it will process, filter, and enhance your image while it's at it. ImageMagick will convert an image from nearly any format to nearly any other format - over 200 different file formats. The second program is an image conversion tool called ImageMagick.

Go to to read more about pandoc and to download it for your Linux, Windows, or Mac OS box. Pandoc supports 27 input file formats, and 47 output file formats. Pandoc also makes slide shows in PDF, PowerPoint, and several other formats.

To convert a file from HTML to PDF, for example, you type this command: On Mac OS, you have to open a terminal window. No, if you're on Windows you have to open a window or a PowerShell window. You don't click on an icon, or right-click on a file icon. Its only drawback, if you want to look at it that way, is that it's a command-line tool. Pandoc will convert a document from nearly any format to nearly any other format. The first program is a free-and-open-source document conversion tool called Pandoc. One is a document converter, one is an image converter, and one is a souped-up terminal emulator and a Linux shell. Once again, from the 'where have you been all my life?' department, I bring you three useful programs for your computer.

Mac mobaxterm alternative