Adobe ACROBAT 3D Manual page 174

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Reducing Adobe PDF file size

Reducing the size of Adobe PDF files improves their performance--particularly when

they're being accessed on the web--without altering their appearance. You can sometimes

reduce the file size of an Adobe PDF file simply by using the Save As command. This

resaves the file and does not require access to the source file used to generate the Adobe

If you receive a large PDF document, you can use the Reduce File Size command to try to

reduce the file size by resampling and recompressing images, unembedding fonts,

compressing document structure, and cleaning up elements such as duplicate background

images and invalid bookmarks. If the file size is already as small as possible, this

command has no effect. (See

Note: Reducing the file size of a digitally-signed document invalidates the signature.

You can also reduce file size by limiting the compatibility with earlier versions of Adobe

Acrobat. This is recommended only if you are sure that all your users use Acrobat 7.0,

Acrobat 3D, or Adobe Reader 7.0.

Note: You can also set version compatibility in PDF Optimizer.

To reduce file size:

1. Choose File > Reduce File Size.

2. Select the version compatibility that you need, and click OK.

Note: If you select Acrobat 4.0 And Later, and the document contains transparency, the

transparency is flattened.

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