Quick links to procedures on this page:
• |
• |
• |
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 |
1. |
Click File Export.
|
2. |
Choose PDF - Adobe Portable Document Format from the Save as type list
box.
|
3. |
Locate the folder in which you want to save the file.
|
4. |
Type a filename in the File name box.
|
5. |
Click Export.
|
The PDF settings dialog box appears. |
6. |
Click the Objects tab.
|
7. |
Choose one of the following from the Compression type list box:
|
• |
None
|
• |
LZW
|
• |
JPEG
|
• |
ZIP
|
• |
JP2
|
The JP2 (JPEG 2000) option is available only for Adobe Acrobat 6.0, Adobe
Acrobat 8.0, and Adobe Acrobat 9.0
|
If you choose JPEG compression, you can specify the compression quality by
moving the Quality factor slider.
|
To compress text and line art in a PDF file |
1. |
Click File Export.
|
2. |
Choose PDF - Adobe Portable Document Format from the Save as type list
box.
|
3. |
Locate the folder in which you want to save the file.
|
4. |
Type a filename in the File name box.
|
5. |
Click Export.
|
The PDF settings dialog box appears. |
6. |
Click the Objects tab.
|
7. |
Enable the Compress text and line art check box.
|
To downsample bitmap images in a PDF file |
1. |
Click File Export.
|
2. |
Choose PDF - Adobe Portable Document Format from the Save as type list
box.
|
3. |
Locate the folder in which you want to save the file.
|
4. |
Type a filename in the File name box.
|
5. |
Click Export.
|
The PDF settings dialog box appears. |
6. |
Click the Objects tab.
|
7. |
Enable any of the following check boxes, and type a value in the corresponding
box:
|
• |
Color
|
• |
Grayscale
|
• |
Monochrome
|
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.
|
Copyright 2012 Corel Corporation. All rights reserved.