Quick links to procedures on this page:
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You can compress bitmap images, text, and line art to reduce the size of a PDF file. Options for bitmap image compression include JPEG, LZW, and ZIP. Bitmap images that use JPEG compression have a quality scale ranging from 2 (high quality, less compression) to 255 (lower quality, more compression). The higher the image quality, the larger the file size.
You can also reduce the size of a PDF file by downsampling color, grayscale, or monochrome bitmap images.
Using symbols in a drawing can help you reduce the file size of the PDF file when publishing to PDF. For more information, see Working with symbols.
| To set the bitmap compression in a PDF file | |
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Click File  Export.
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2. |
Choose PDF - Adobe Portable Document Format from the Save as type list
box.
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3. |
Locate the folder in which you want to save the file.
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4. |
Type a filename in the File name box.
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5. |
Click Export.
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The PDF settings dialog box appears. |
6. |
Click the Objects tab.
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7. |
Choose one of the following from the Compression type list box:
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None
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LZW
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JPEG
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ZIP
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JP2
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The JP2 (JPEG 2000) option is available only for Adobe Acrobat 6.0, Adobe
Acrobat 8.0, and Adobe Acrobat 9.0
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If you choose JPEG compression, you can specify the compression quality by
moving the JPEG quality slider.
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| To compress text and line art in a PDF file | |
1. |
Click File Export.
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2. |
Choose PDF - Adobe Portable Document Format from the Save as type list
box.
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3. |
Locate the folder in which you want to save the file.
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4. |
Type a filename in the File name box.
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5. |
Click Export.
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The PDF settings dialog box appears. |
6. |
Click the Objects tab.
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7. |
Enable the Compress text and line art check box.
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| To downsample bitmap images in a PDF file | |
1. |
Click File Export.
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2. |
Choose PDF - Adobe Portable Document Format from the Save as type list
box.
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3. |
Locate the folder in which you want to save the file.
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4. |
Type a filename in the File name box.
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5. |
Click Export.
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The PDF settings dialog box appears. |
6. |
Click the Objects tab.
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7. |
Enable any of the following check boxes, and type a value in the corresponding
box:
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Color
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Grayscale
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Monochrome
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Downsampling color, grayscale, or monochrome bitmap images is effective
only when the resolution of the bitmap image is higher than the resolution
specified in the Bitmap downsampling area.
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