If you often work with a large number of images and need to quickly reduce them, convert them to another format, remove their background or create a PDF from them, you'll be surprised. In macOS, it has been relatively hidden for many years, but it's still an absolutely great feature that makes these tasks easier for you. I personally have been using it for many years due to my frequent work with photos for reviews and the like, but I was quite surprised that only a few people in my area know about this option and what's more, when I recently saw a video about this feature on Instagram and read the comments on it, I found out that obviously many more people don't know about it than I would have expected. And that's a shame.
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I'm specifically referring to the "Quick Actions" option, which you can invoke after selecting one or more photos with the right mouse button (or with the appropriate gesture on the trackpadat or Magic Mouse). Then you choose from the menu what should happen to the files, and you're done. This style can be used to easily convert, for example, from PNG to JPEG, or reduce the size of images. You can also remove their background, which automatically crops the object in the image, or create a PDF file from the images. There is also the option of annotation, which allows you to draw and write on the image. So if you don't know about this thing, be sure to check it out - it is definitely useful.
