PNG (Portable Network Graphics) is an image file format designed to store raster graphics
TIFF (originally standing for Tagged Image File Format) is a file format for storing images.
Approach smaller compression
"The resulting file from this png approach is smaller in size than a tiff file and i guess may rescale better"
from question "Creating Crisp or sharp graphics with R for importing into PowerPoint"
"The resulting png compression may produce a file size larger than your tiff compression"
from question "ImageMagick - Smaller resized image is a much larger file size"
"Tiff â any bit depth any compression lossy or lossless everything including the kitchen sink â and no better than png"
from question "Where can I find a good introduction to bitmaps"
"Jpg or png should get you smaller than tiff"
from question "VB.NET - Image compression"
"Today png is much more popular than tiff so if you re writing files outside of your own data store png would be a more common choice and you d need to work through nsimagerep to get there"
from question "Best practice of storing and retrieving an NSImage in binary"