WDD - Design

using a diagram which includes: all of the pages that will be part of the website links between internal pages using arrows to indicate link direction links to external pages using arrows to indicate link direction

navigational links consistency across multiple pages relative vertical positiong of media file formats of media

• To ensure people are rewarded for their work • To give the copyright holder protection from their work being copied or stolen

own the copyright themmselves seek permission to use the content from the copyright owner give credit for the use of content

uncompressed high quality sound standard for CDs large file size

Lossy Compression Removes high and low frequencies generally not heard by human ear compression results in file size around one tent of original small file size

Lossy compression 24 bit colour depth No animation No transparency Used to store photographs

Lossless compression 8 bit colour depth Animation Transparency Not suitable for photographs, good for cartoons and animations

Lossless compression 24 bit colour depth No animation Transparency Used to store photographs

the total number of pixels in the image

-lower image quality -smaller file size

• better the image quality -larger file size

The measure of the number of bits used to store the colour for each pixel in an image

256

65,536

16,772,216

better image quality larger file size

lower image quality smaller file size

a measure of how many times per second a sound is sampled

better audio sample larger file size

lower the audio sample smaller file size

to reduce the size of a file

download quickly stream quicker takes up less space in memory

None of the original data is lost file tends to be larger compared to lossy compression