Using pictures in slides is definitely a great thing because visual communication is much more effective. It’s faster, clearer and generally triggers more emotions.
Adding images in LibreOffice Impress is quite simple, let’s see how to do it and avoid the common mistakes.
You have a choice between using photos, drawings, illustrations and clipart. First advice is choose one kind/style (i.e. black and white photos) and stick with that for the whole presentation. Don’t mix and match. Second advice avoid clipart: they are so last century!
You can embed pictures or by importing it or by copy & paste. I suggest the former because you have more control over the result.