Image Resolution.

 What exactly is the distinction between 300ppi and 72ppi? 

PPI is an abbreviation for pixels per inch, which refers to the number of pixels in one inch of an image. The number of pixels in one inch of image differs between 300ppi and 72ppi. The term 300ppi refers to the number of pixels per inch, whereas 72ppi refers to the number of pixels per inch. As a result, a 300ppi image has higher resolution and more detail than a 72ppi image. 

What is the significance of this for a graphic designer working on print projects? 

Image resolution is critical for graphic designers working on print projects. Images with a resolution of at least 300ppi are typically required by printers.