JPEG uses a standardized image compression
mechanism to compress full-color or grayscale images for on-screen
display. Use the Export command to export a page, spread, or selected
object in JPEG format.
If desired, select an object to export. (You do
not need to select anything to export a page or spread.)
Choose File > Export.
Specify a location and a filename.
For Save as Type (Windows) or Format (Mac OS),
choose JPEG, and click Save.
The Export JPEG dialog box appears.
In the Export section, do one of the following:
Select Selection to export the currently
selected object.
Select Range and enter the number of the page or
pages you want to export. Separate numbers in a range by using a
hyphen, and separate multiple pages or ranges by using commas or
spaces.
Select All to export all pages in the documents.
Select Spreads to export facing pages in a spread
to a single JPEG file. Deselect this option to export each page
in a spread as a separate JPEG file.
For Image Quality, choose from a range of options that
determine the trade-off between file compression (smaller file size)
and image quality:
Maximum includes all available high-resolution
image data in the exported file and requires the most disk space.
Choose this option if the file will be printed on a high‑resolution
output device.
Low includes only screen-resolution versions (72
dpi) of placed bitmap images in the exported file. Choose this option
if the file will be displayed on‑screen only.
Medium and High include more image data than Low,
but use varying levels of compression to reduce file size.
For Format Method, choose one of the following options:
Progressive displays a JPEG image in increasing
detail as it is downloaded to a web browser.
Baseline displays a JPEG image after it has been
completely downloaded.
Select or type the resolution for the exported JPEG image,
and then click Export.