For Adobe Acrobat and Adobe Reader, Adobe LeanPrint has
defined an ideal print output. This output layout has been tested
and has performed well in usability studies and paper and toner
consumption tests. An ideal Adobe LeanPrint output
is a 4-column landscape page or a 3-column portrait page.
A 4-column landscape page
Adobe LeanPrint analyses the document
structure and based on the complexity, applies transformations to
create a print-optimized layout. You can use Adobe LeanPrint in two modes: Super Saver and
Toner Saver. In the Super Saver mode both paper and toner are saved.
Sometimes, it might not be possible to save paper: for example,
in a single page document. In such cases, Super Saver mode defaults
to the Toner Saver mode.
PDF files can be generated from a broad spectrum of applications,
from word processing software, page layout software, drawing and
illustration software, and many others.
Saving paper in PDF presents some peculiar challenges. PDF is
designed to provide consistent output across devices and platforms,
and does not contain information about the logical structure of
a document. For practical purposes, most PDF documents can broadly
be classified into the following broad categories:
Text rich documents: These documents mainly have textual
content in a single flow of text, and are usually generated using
word processing software. Adobe LeanPrint works
best with such documents.
Placed content documents: These PDF files can contain images,
text, diagrams etc. All the content is placed on a page. Such PDF
files are usually generated using page layout software such as Adobe
InDesign, Microsoft Publisher and so on. Brochures are a good example
of this category. Such documents are treated as complex because
it is difficult to recognize the relationships between various content
pieces, and only toner Saving is done.
Graphics or others: These PDF files are generated using graphics
software such as Adobe Illustrator and contain graphics that are
not considered for paper savings. Similarly PDFs generated using
MS PowerPoint and MS Excel are only considered for toner saving.
XFA Forms: Documents that are based on XML Forms Architecture,
and other specializations of the PDF specification are not processed
by Adobe LeanPrint.
For a PDF file that is eligible for paper saving, each page is
analyzed. Depending on the layout of each page, Adobe LeanPrint weighs the complexity and takes intelligent
decisions to optimize paper usage. All blank pages are removed.
Each page's content is then analyzed and if the page is complex,
it is not reflowed. For example, if a page contains a large image
or a number of images, Adobe LeanPrint does not
re-layout that page.
All the reflowed pages are then assembled and displayed in the
In the Toner Saver mode, there are no changes to the layout,
and the number of pages are the same as the original document. Empty
pages, however, are removed. Toner Saver can be run in grayscale
and color modes. In the color mode, all colors in the document are
retained, but lightened to reduce toner consumption.
An example of how Adobe LeanPrint works
with PDF files.