Adobe InDesign CC 2015 - Manual (Page 543)

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Exporting and publishing
Last updated 6/6/2015
Image Conversion Lets you choose whether the optimized images in your document are converted to GIF, JPEG, or
PNG. Choose Automatic to let InDesign decide which format to use in each instance. Choosing PNG disables the image
compression settings.; use PNG for lossless images or for images that include transparency.
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 can cause unexpected results.
Select Interlace to load the images progressively by filling in missing lines. If this option is not selected, an image looks
fuzzy and gradually becomes clear as the image reaches full resolution.
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 downloaded; a placeholder appears in its place until the file is
displayed.
Ignore Object Export Settings Ignores Object Export Options applied on individual images. See Apply Object export
options .
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.
Generate CSS Specify whether you want InDesign to generate a CSS for the exported file. If you select the Generate
CSS option, you can also select the Preserve Local Overrides option to include the local formatting such as italic or bold.
Add Style Sheet 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. You can use Dreamweaver to confirm
your external CSS setup.
JavaScript Options Select Add Script to run a JavaScript when the HTML page is opened. InDesign does not check
whether the JavaScript exists or is valid.
Exporting to Adobe PDF