Question: what is px and dpi?
Answer: Pixel density Now, the resolution is expressed in dpi (or ppi), which is the acronym for dots (or pixels) per inch. So, if you see 72 dpi it means that the image will have 72 pixels per inch; if you see 300 dpi means 300 pixels per inch, and so on. The final size of your image depends on the resolution that you choose.