cHTML

To develop i-Mode compatible web applications you must know a web markup language called iHTML which extends cHTML defines to Compact HTML for Small Information Appliances. This specification was written by a small Tokyo company called Access and they developed the micro browser i-Mode uses to connect to the Internet and it only accepts GIF images.

The following markup languages you can to develop i-Mode applications with:

• Straight HTML, behind an i-mode filter
• Straight HTML, customized for small screens and avoiding any of the elements excluded in cHTML
• cHTML. In essence, this is almost identical to the straight HTML solution
• iHTML; that is, cHTML, with i-mode-specific extensions included

So there are quite a few option. You can develop a site in HTML and then use a i-Mode filter such as WebSphere Transcoding Publisher which will take out the tags or attributes which i-Mode does not except. Either that or you can develop a site in cHTML if you know which tags/attributes you don't need and your site is only meant for i-Mode.

cHTML is used due to its:

• small displays (mobile typical 128 x 128 compare to a PC 1024 x 768 screen resolution)
• black and white
• CPU power, battery life
• limited memory

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