Adobe InDesign CS5 - Manual (Page 124)

118 USING INDESIGN
Working with documents
Last updated 11/16/2011
Optimized Lets you change settings to determine how the image is exported.
• Formatted Preserves InDesign formatting, such as rotation or scale, as much as possible for web images.
• Image Conversion Lets you choose whether the optimized images in your document are converted to GIF or JPEG.
Choose Automatic to let InDesign decide which format to use in each instance.
• GIF Options (Palette) Lets you control how InDesign handles colors when optimizing GIF files. The GIF format
uses a limited color palette, which cannot exceed 256 colors.
Choose Adaptive (No Dither) to create a palette using a representative sample of colors in the graphic without any
dithering (mixing of small spots of colors to simulate additional colors). Choose Web to create a palette of web-safe
colors that are a subset of Windows and Mac
OS system colors. Choose System (Win) or System (Mac) to create a
palette using the built-in system color palette. This choice may cause unexpected results.
• JPEG Options (Image Quality) Determines the trade-off between compression (for smaller file sizes) and image
quality for each JPEG image created. Low produces the smallest file and lowest image quality.
• JPEG Options (Format Method) Determines how quickly JPEG graphics display when the file containing the image
is opened on the web. Choose Progressive to make the JPEG images display gradually and in increasing detail as they
are downloaded. (Files created with this option are slightly larger and require more RAM for viewing.) Choose
Baseline to make each JPEG file display only after it has been completely downloaded; a placeholder appears in its place
until the file displays.
Link To Server Path Rather than exporting images to a subfolder, this option lets you enter a local URL (such as
“images/”) that appears in front of the image file. In the HTML code, the link attribute displays the path and extension
you specify. This option is especially effective when you’re converting images to web-compatible images yourself.
Note: InDesign does not check the path you specify for Java™ scripts, external CSS styles, or image folders, so use
Dreamweaver to verify paths.
Advanced options
Use the Advanced area to set CSS and JavaScript options.
CSS Options Cascading Style Sheets (CSS) are a collection of formatting rules that control the appearance of content
in a web page. When you use CSS to format a page, you separate content from presentation. The content of your page—
the HTML code—resides in the HTML file itself, while the CSS rules defining the presentation of the code reside in
another file (an external style sheet) or within the HTML document (usually in the Head section). For example, you
can specify different font sizes for selected text, and you can use CSS to control the format and positioning of block-
level elements in a web page.
• Embedded CSS When exporting to XHTML, you can create a list of CSS styles that appears in the Head section of
the HTML file with declarations (attributes).
If Include Style Definitions is selected, InDesign attempts to match the attributes of the InDesign text formatting with
CSS equivalents. If this option is deselected, the HTML file includes empty declarations. You can edit later these
declarations in Dreamweaver.
If Preserve Local Overrides is selected, local formatting such as italic or bold is included.
• No CSS Selecting this option omits the CSS section from the HTML file.
• External CSS Specify the URL of the existing CSS style sheet, which is usually a relative URL, such as
“/styles/style.css.” InDesign does not check whether the CSS exists or is valid, so you’ll want to use Dreamweaver to
confirm your external CSS setup.
JavaScript Options Select Link To External JavaScript to run a JavaScript when the HTML page is opened. Specify the
URL of the JavaScript, which is usually a relative URL. InDesign does not check whether the JavaScript exists or is valid.