Image Formats

A Simple Graphic

JPEG
uncompressed
5015 bytes
JPEG
75% compressed
1291 bytes
JPEG
90% compressed
1072 bytes

The JPEG is significantly larger than a GIF and the straight lines are poorer

Blotches of colour and lines where colours meet show the limitations of JPEG for this sort of image

At this level of compression, the failings of JPEG are very obvious


GIF
256 colours
1180 bytes
GIF
8 colours
643 bytes

A perfect image - there is no difference between this format and a normal bitamp, but its 20% of the size of the JPEG. Note the clean straight lines

With large areas of a few plain colours, there is no loss of quality when the number of colours is reduced