Unless the images for the webpage have been provided by the customer in a suitable format, the web designer will either have to create the page images from scratch or modify the existing image to ensure that the file weight is suitable for our page.

One of the key factors with any web page graphics is the download time.
This is directly determined by the filesize (weight) of the images in the web page as well as the type of connection (dial-up or broadband) our visitor is using to download and view the page in their web browser.

There are numerous Graphics programs on the market which are capable of exporting various image formats to suit a variety of different purposes.

animated gif - Very light weight image files commonly used for Banner advertising with multiple frames.

.jpg - Jpeg files are heavier in file weight than Gif files but offer better quality image resolution. Good for logos and full size pictures.

Other file types would be relating directly to video and these will require more indepth knowledge of the medium to implement.