While most of you might already be familiar with more-than-popular graphic designing tool Canva, I want to recommend this tool, taking no assumption! Logo of Content Chef and most of the graphics you see on Content Chef or other websites of mine are made with Canva.
If you have not gotten your hands on Canva yet, feel free to create your free Canva account today. The free version of Canva offers more than you need to get started, and you can unlock full functionality (like transparent background images, stock photos, illustrations, etc.) with Canva Pro, which costs U$9.95 per month when paid annually or US$12.95 when paid monthly.