Images come in a variety of file types: jpg, png, pdf, eps, svg, tif, bmp, and countless other lesser-known ones. Each have their pros and cons, but they can be divided into two types: vector and raster. In science, we generally want vector images, unless we are dealing with photos.
If I could offer only one piece of advice to any scientist on how to improve the figures and presentations they produce, it would be ‘Learn how to use Inkscape’. If you ended up here by searching for “Inkscape scientists” or some variant of that, then what follows is just confirmation that you’re looking for the right thing.
Inkscape is a cross-platform, open-source vector graphics editor. Let’s break down all those adjectives to see how they help: