I've configured my mac to read-aloud any text I've selected when I press the option+cmd+v keyboard shortcut. It's available through the accessibility settings. There is also the option the increase the reading speed. The standard text-to-speech vocalisation is actually quite good, it avoids strain on the eyes, help you detect spelling errors when proof reading a text, and it can save you a lot of time.

Another tip for my multi-lingual friends is to install the voices[1] command line tool to quickly switch the language, or use the polyglot[2] tool to do the same thing through the menu bar.

[1] https://github.com/mklement0/voices [2] https://github.com/Fredmf/polyglott