Several considerations regarding graphic file formats should be discussed before moving on to other aspects of Web page creation. These include using
Using Lo-Res Images
As an alternative to progressive rendering, consider the lo-res approach. FrontPage supports, in the Picture File Type dialog box, a lo-res alternative to any image. This lo-res alternative loads before the actual image loads. If you can create a compressed or black-and-white version of the actual image,
FrontPage can help create a lo-res alternative. With the image selected, click the Black and White tool in the Picture toolbar. This creates a black-and-white version of the image. Save this version with a name that is unique, and include this
Another trick for managing large images that are slow to download is to slice it, cut the large image into several smaller ones. As the page loads, these pieces will download and become visible before the entire image does.
This technique gives visitors a quick look at portions of the image without the blurry blotches that are common with progressively rendered images.
When using this technique, you should place the cut-up images within a table so that they won't wrap if the browser window is reduced. Be sure to set the borders, cell padding, and
The optimization tools in FrontPage are limited, so you might need to rely on additional tools to complete your optimizations. For example, Adobe's graphical tools have adopted a common interface for optimizing graphics for the Web. Whether you're using Photoshop, Illustrator, or InDesign, the Save for Web dialog box will let you visually check the various optimization options.
Several good tools to assist you with image optimization are as
Converting Between Formats
FrontPage makes working between different graphic formats easy. Although you would expect FrontPage to support only the GIF, JPEG, and PNG formats, FrontPage actually can place images in any of the following formats:
Although FrontPage can import any of these graphic formats, FrontPage automatically converts the image to GIF, JPEG, or PNG when the page is saved. The format depends on the setting in the Picture Properties dialog box. When the page is saved, you are given a chance to rename the image in the Save Embedded Files dialog box before it is saved along with the HTML file for this page. Follow these steps to convert between formats: