Adobe Acrobat 8 3D - Manual (Page 73)

66 ADOBE ACROBAT 3D VERSION 8
User Guide
Make PDF/A Compliant Select this option to make the PDF conform to ISO standards for PDF/A-1b. When selected,
only Searchable Image (Exact) is available in the Recognize Text - Settings dialog box for the PDF Output Style
option.
Optimization Drag the slider to set the balance point between file size and quality. Click the Options button if you
want to customize optimization with specific settings for file compression and filtering.
Make Searchable (Run OCR) Select this option to make text and images in the PDF searchable and selectable. This
option applies OCR and font and page recognition to the text images and converts them to normal text. Click the
Options button to select specific settings in the Recognize Text - Settings dialog box. See “Recognize text in scanned
documents” on page 68.
Make Accessible Select this option to add tags to the document, which improve accessibility for disabled users.
(Available only when Make Searchable (Run OCR) is selected.)
Add Metadata Select this if you want to add information about the scanned document to the PDF file. When this
option is selected, the Document Properties dialog box appears after scanning, where you can type in the metadata
you want to add.
Scanner Options dialog box
Data Transfer Method Native Mode transfers in the default mode for your scanner. Memory Mode is automatically
selected for scanning in resolutions over 600 dots per inch (dpi).
User Interface The Hide Scanner’s Native Interface option bypasses the windows and dialog boxes provided by the
scanner manufacturer. Instead, scanning from Acrobat opens the Acrobat Scan dialog box.
Paper Size The menu lists available standard page sizes.
Invert Black And White This option creates positive images from black-and-white negatives, for example.
Optimization Options dialog box
The Optimization Options dialog box for image settings controls how scanned images are filtered and compressed
for the PDF. Default settings are suitable for a wide range of document pages, but you may want to customize settings
for higher-quality images, smaller file sizes, or scanning issues.
Automatic Applies default settings to balance file size and quality at a moderate level.
• Aggressive Applies settings that minimize file size. In some cases, selecting this option may visibly affect the
quality of the scanned PDF.
Custom Settings Makes additional settings available under Compression and Filtering and disables the Aggressive
setting under Automatic. If you select Custom Settings, the Color/Grayscale or Monochrome settings are available,
depending on the option you selected in the Acrobat Scan dialog box.
Color/Grayscale settings When scanning color or grayscale pages, select one of the following:
• Lossless Does not apply compression or filters—such as Deskew, Background Removal, and so forth—to scanned
pages.
• Adaptive Divides each page into black-and-white, grayscale, and color regions and chooses a representation that
preserves appearance while highly compressing each kind of content. Recommended scanning resolutions are 300
pixels per inch (ppi) for grayscale and RGB input, or 600 ppi for black-and-white input.
• JPEG Applies JPEG compression to the entire grayscale or RGB input page.