DT - Image File Types

compressed, bitmapped image file type that keeps file sizes low by reducing repetition of pixel patterns throughout the image.

originally designed for photographs.

the amount of compression can be varied, and at high levels of compression a very low file size can be achieved.

doesnt support animation or transparency, and the compression used is lossy which means that image details get permanently lost during compression.

a compressed, bitmapped image file type.

GIF files can be animated sequences of images or singular still images.

it contains transparent pixels.

lossless compression techniques are employed when GIF files are saved.

their file sizes are kept low by restricting the colour depth to just 256 colours (which is 8-bit colour, yielding 28 colours).

compressed, bitmapped image file type that was initially developed for online image sharing.

PNG files don't therefore use the CMYK colour mode that is geared towrads printer ink colours.

like GIF files they employ lossless compression techniques and support transparency.

they do not support animation.

developed to be usable in both microsoft windows and apple macintosh operating systems.

they are used as a standard file type in commercial printing and OCR software commonly produces TIFF images from scans.

they behave like containers for holding other image file types.

their structure is highly complex compared to other image file types.

they can use both lossy and lossless compression techniques.

apple developed PICT as their native graphic file type for the interchange of graphics between various apple programs.

in recent years support has reduced and the format has been superseded by PDF since the release of Mac OS X.

PICT is an object-oriented file type that can store colour yielding 224 or 16,777,216 colours which is known as true colour.