Adobe InDesign CC 2015 - Manual (Page 525)

520
Exporting and publishing
Last updated 6/6/2015
The Conversion Settings section of the EPUB - Fixed Layout Export Options dialog box includes the following options.
From the Image Conversion menu, determine how images are exported to EPUB.
Conversion Settings > Resolution (PPI) Choose the resolution of the images in pixels per inch (ppi). While operating
systems have standardized on either 72 ppi or 96 ppi, mobile devices range from 132 ppi (iPad), to 172 ppi (Sony
Reader), to over 300 ppi (iPhone 4). You can choose a ppi value for each object selected. Values include 72, 96, 150
(average for all eBook devices today), and 300.
Conversion Settings > Format 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.
Conversion Settings > 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 option 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.
Conversion Settings > 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.
Conversion Settings > 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.
Viewing Apps > View EPUB After Exporting Opens the EPUB in the default application selected for reading EPUB, if
present.
Is applicable to both Reflowable and Fixed Layout Export Options dialog box.
EPUB Application Version Supported Not Supported
Mac
Apple iBooks 1.0.1 Yes
Oxygen 14.1 Yes
Kindle Previewer 2.92 Yes
Sigil 0.7.4 Yes
Kindle 1.10.6 No
VitalSource Bookshelf 6.2 No
Apple Book Proofer 1.0.1 Does not accept EPUBs with
embedded fonts
Windows
Sigil 0.7.4 Yes
Kindle Previewer 2.92 Yes