The PNG (Portable Network Graphics) is a
method to store images by compressing images with no loss of
information. PNG files can store colors with up to 48 bits
per pixel and gray scales with up to 16 bits per pixel.
Moreover, it can also store an optional alpha channel for
transparency. When PNG is used in the connected network, it
can correct gamma and color of images automatically. So you
can accurately render the images on different display
ICO is a image file extension for
small Windows icon. *.ICO can store more than one images
with different sizes or colors. Normally it is 16*16 and
32*32 pixels square with 16 colors. Windows XP or VISTA
supports bigger size like 48*48 or 256*256 and 32-bit color
TIF/TIFF (Tag Image File Format) is
widely and common used lossless image format in all
platforms, such as Mac, Windows, Unix. With the ability of
storing arbitrary number of bits per pixel and having
variety of compression algorithms, TIFF is favored by most
people, especially by graphic designers. TIFF supports CMYK,
RGB, Lab, indexed color and grayscale with alpha avenue and
Bitmap images without alpha avenue. When approving or adding
new tags, it can extend TIFF format by using tags. That is,
the image information can be stored and arranged.
png ico to tif file,
TIF Image Builder.
PGM, a part of PNM, also called
portable graymap file format, which is created by Jef
Poskanzer's PBMPlus Portable bitmap utilities in 1991, the
lowest common denominator grayscale format. It aims to be
extremely easy to learn and write programs. PGM stores both
grayscale bitmaps and monochrome (black & white) bitmaps.