Graphic Optimization
Most of the website designers and developers often concentrate on the design, look and feel, aesthetics of the website, whereas forget about the name, size and the number of images appearing in the webpage. So it’s a must to optimize the images. There are two types of Graphic Optimization, one which helps in acheiving high speed website and the other which help in search engine optimization.
1. Optimizing the Image Size ie. Creating a image which is less in size.
The graphic/image present in the website should be less in size and more efficient , hence when a website gets downloaded, along with the image also gets downloaded. So if the image size is big, then it would take time for the website to display and also consumes high bandwidth.
Say for example, if a image is 40 KB, it would take some time to get downloaded, instead if it is just 4 KB, within a fraction of milli-seconds it would get downloaded, which results in quick display of the web page.
Recommendation: It’s recommended that the homepage or any other page is less than 200 KB overall and with less than 20 Objects. This would increase the download speed of the website at the same time doesn’t consume more bandwidth.
2. Optimizing the Image Name
When Website Templates are created, it involves writing a style sheet, which may contain some images. It is good to name the images as header_img.gif , body_img_bg.gif etc in case of style sheets to easily understand, whereas when it comes to products boxes, mangement people images, its good to have the name related that product.
Say for example, if there is an antivirus program boxshot, you can name the image as “Buy_Antivirus.gif” with an alt text as “Virus protection software” etc. So this would also help the website listed in search engines for keywords like buy antivirus software protection etc. Because all the search engine spiders see only the text and not the image. So its necessary to the image with relevant names which adds value to SEO. In case you the an antivirus software as “as.jpg” then as is not going to be listed nor conveys a meaning.
So while creating a website HTML,HTML Images, CSS (Cascading Style Sheet)Images, Image names , size , format (recommended is gif, png) ,Javascript, Graphics and multimedia objects should be given importance.
Hope this helps! 
February 28th, 2010 at 12:26 am
Thank you for this entry, I make an effort to post everything I can on my site regarding seo.