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Compare a revised PDF to an earlier version
Use
the Compare Documents feature to show the differences between two versions
of a PDF. You can customize many options for displaying the compare results.
- Choose
Document > Compare Documents.
- Specify
the two documents to compare. If one or both of the documents is
in a PDF package, select the package, then under Package Item, select
the component PDF.
Note: The Document Compare feature isn’t available for
PDF Portfolios created in Acrobat 9.
- As needed, specify the page ranges in the documents to
compare in the First Page and Last Page boxes.
- Select the Document Description that best describes the
documents you are comparing, and click OK.
Once the two documents are analyzed, a results document
appears with the Compare panel open. The new document is shown with
annotations indicating the changes. The first page shows a summary
of the comparison results.
- From the Compare pane, do any of the following, as needed:
To hide the annotations that display changes,
click Hide Results.
To specify the display options for compare results,
click Show Options. You can specify the type of changes to display,
and the color scheme and opacity of the annotations. To return to
the page thumbnails, click Hide Options.
To show each of the documents in its own window,
from the options menu  , choose
Show Documents Tiled or Show Documents Side By Side. To synchronize
the relevant pages while showing the documents in their own windows,
from the options menu , choose
Synchronize Pages.
Click a page thumbnail to go directly to that page.
To change the size of the page thumbnails, from the options menu , choose
Thumbnail Size > [option].
Drag the splitter bar at the bottom of the Compare
pane up to show thumbnails of the old document. Click a thumbnail
from the old document to open it in a new window.
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