What is the perfect resolution if want a clean non pixelated background

[harishcs]

well 30 increases the size of the image it goes over a mb and i did not do it in png mine is jpeg does that make a huge difference

 

[Andrew Flint]

well 30 increases the size of the image it goes over a mb and i did not do it in png mine is jpeg does that make a huge difference

.PNG is like the best one to save graphics work like backgrounds as, as you don't lose any quality