macOCR is a command line app that enables you to turn any text on your screen into text on your clipboard. When you envoke the ocr command, a "screen capture" like cursor is shown. Any text within the bounds will be converted to text.

TRex makes OCR easy and accessible on a Mac.

But what is OCR anyway? Imagine you have a PDF file or a Web page where you can't select the text, image with text on it, or even a YouTube video. Forget retyping it manually; with TRex, you can extract text from anywhere, and it is as easy as taking a screenshot.