Do reuse imagesOnce images are loaded they are stored in cache.
If you use the same image in several webpages the image will be
loaded the second time in a breeze. It is necessary to have the
image in the same location. Also be sure to use exactly the same
filename. Even if a browser can handle differences in uppercase
and lowercase, your browsercache can not.
Don't reference images from other sites
If you use images from another site (i.e. an image archive ) do copy
them to your own site.
Looking up other servers to get the images would introduce
overhead and an extended load-time.
Do provide size information
If you use large images, videos etc., give an indication of the size
before the actual transfer begins.
Don't use large textual images
Avoid creating images of large pieces of text. It gives you more
possibilities but it costs valuable bandwidth.
If you do need textual images be sure to reduce the number of
colors.
Don't use wordprocessors
Don't use wordprocessors to write HTML. They really mess it up.
It's not uncommon for a site to double or triple in size because tags
are added unnecessarily by a wordprocessor.
100 Do's and Don'ts in Web Design SpiderPro
Presenting Text
Don't use blinkThe tag
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