Epub advanced options – Adobe InDesign CC 2015 User Manual
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Exporting and publishing
Last updated 6/6/2015
Image Size
Specify if image size must remain fixed or resized relative to the page. Relative to Page Size sets a relative
percentage value based on the size of the image relative to the InDesign page width. This option causes the images to
rescale proportionally, relative to the width of the reading area.
Image Alignment and Spacing
Specify the image alignment, left, center, right, and the space before and space after.
Insert Page Break
Check to insert page breaks with images. Page breaks can be inserted Before Image, After Image, or
Before and After Image.
Settings Apply to Anchored Objects
Check to apply these settings to all anchored objects.
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 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.
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 Conversion Settings
Ignores Object Export Options applied on individual images. See
EPUB Advanced options
The Contents section of the EPUB Options dialog box includes the following options.
Split Document
You can split the eBook at the specified paragraph style. Splitting results in a larger number of HTML
files in the EPUB package, but can be helpful for breaking up long files and increases performance in the EPUB readers.
Include Document Metadata
The metadata from the document (or the style source document if a book was selected)
is included with the exported file.
Publisher
Specify the publisher information that appears in the eBook metadata. You can specify a URL for the
publisher so that someone who receives the eBook can visit the publisher’s website.
Unique ID
Every EPUB document requires a unique identifier. A unique identifier is automatically created and
displayed. You can remove it and specify a unique identifier.
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.
Include Style Definitions
When exporting to EPUB, you can create a list of CSS styles that can be edited.
Preserve Local Overrides
If this option is selected, local formatting such as italic or bold is included.