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USING ACROBAT 9 PRO
Saving and exporting PDFs
About the Autosave feature
The Autosave feature guards against losing your work in case of a power failure by incrementally, and at regular
intervals, saving file changes to a specified location. The original file is not modified. Instead, Acrobat creates an
autosave file of changes, which includes all the changes you made to the open file since the last automatic save. The
amount of new information that the autosave file contains depends on how frequently Acrobat saves the autosave file.
If you set the autosave interval to 15 minutes, you could lose the last 14 minutes of your work if a problem occurs.
Frequent automatic saving prevents loss of data, and is especially useful if you make extensive changes to a document,
such as by adding comments.
You can apply autosave changes to the original files when you restart Acrobat. When you close, save manually, or
revert to the last-saved version of a file, the autosave file is deleted.
Note: If you use assistive technology, such as a screen reader, you may want to disable the Autosave feature so that you
don't lose your place when the file is reloaded.
The Autosave feature won't work in the following cases:
• A document that has its security changed. You must save the document to re-enable automatic saving of document
changes.
• A document created using the Web Capture feature or extracted from a larger PDF (Document > Extract Pages).
You must save the document to enable automatic saving of changes.
• A document displayed in a web browser or incorporated into a container document that supports Object Linking
and Embedding (OLE). This document appears outside the default file system and cannot support automatic
saving.
Recover lost changes
To prevent lost changes after an unexpected interruption, the Autosave feature must be enabled, which is the default
setting.
Set up automatic saving
In the Preferences dialog box under Categories, select Documents.
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Select Automatically Save Document Changes To Temporary File Every xx Minutes (1-99), and specify the number
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of minutes.
Recover lost changes after an unexpected shutdown
Start Acrobat or open the file you were working on last.
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When prompted, click Yes to open the autosave file or files. If multiple files were open, Acrobat opens all of the files
for you.
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Save the file or files with the same names as the files you were originally working on.
Reduce file size by saving
You can sometimes reduce the file size of a PDF simply by using the Save As command. Reducing the size of PDFs
improves their performance—particularly when they're being opened on the web—without altering their appearance.
The Reduce File Size command resamples and recompresses images, removes embedded Base-14 fonts, and subset-
embeds fonts that were left embedded. It also compresses document structure and cleans up elements such as invalid
bookmarks. If the file size is already as small as possible, this command has no effect.
Last updated 9/30/2011
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