image sprites look bad

When using canvas with image sprites, background image of the canvas looks fine, but the image sprites (which I change these sizes with imagesprite.width or height) looks not clear like original (alot bad) on the phone.

I tried with gif format. Should I try another like png, jpg or is it because of the size changed?



png has transparency, and that might look better.  If you're resizing things, make sure the RATIO (horizontal vs vertical) doesn't change.  Otherwise, the image will distort.



see also App Inventor and the Screen Size