Many people assume PowerPoint is only used for
presentations, however, it may be used as a substitute for developing graphics for
use on websites or in other types of documents. Yes, I develop presentations, but the bulk of work I perform in PowerPoint is actually
developing visuals for use elsewhere. Here's a trick I plan to include in one of my courses at Dude University:
Often I have certain styles I must follow such as colors, sizes, etc. Therefore, I develop a PowerPoint file strictly for a series of graphics that I call a "prepper" so I will not lose the process in how I developed a visual, or if I need to update or recreate a similar one quickly. In that file, I will have sample colors and sizes to use as a template vs. recreating any wheels.
For staying in a color scheme, PowerPoint has a feature called an "Eyedropper". Once I have the colors established and need to apply them to an object, I can quickly apply the appropriate color to fill or outline an object based on another object's color.
For sizing, PowerPoint uses inches, so I use sites such as NinjaUnits to convert between pixels vs. inches.
Some of our clients work with social media to promote their department (e.g., project updates, upcoming events), so I refer to guides such as Sprout Social's Guide to Social Media Image Sizes when not I am not posting a simple photo.
There are certainly reasons a graphic designer needs high-end tools, however, the bulk of what many people need can be found in PowerPoint. Before committing additional software funds or undergoing a learning curve to use a graphic design program, use one of the tools already in your arsenal first.