Adobe 65023809 Printing Guide - Page 111

Comparing Documents

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Comparing Documents The Compare Documents feature is greatly enhanced in Acrobat 9 Pro. To launch the feature, choose Document > Compare Documents (in Acrobat 8, this feature was under the Advanced menu). You can choose from any two currently open files, or browse for two PDFs to compare. Designate the older and newer file, specify the type of documents you are comparing, and Acrobat generates a PDF with the results of the comparison. Whereas previous versions of Acrobat outlined changed areas in pink, Acrobat 9 builds a very detailed report, highlighting every area that differs between the older and newer file. Compare Documents Choose two PDFs for comparison, specify a page range for each, and choose a document description - reports, presentations, or scanned documents - and click OK. It's important to choose the correct document description for optimum results: • Reports, presentations and magazine layouts: Multiple page documents, with text flow from page to page, and objects crossing the gutter on facing-page spreads. • Presentation decks, drawings, or illustrations: Page-independent files; there is no connection between pages other than page order. No text or graphics spanning connecting pages. • Scanned Documents: This option is a bitmap- only comparison. It converts the pages to bitmap, if they are not already, and compares the bitmaps. Since this comparison does full pixel-based bitmap analysis, it will know if two versions of an image are different. Useful for comparing two images when one has been touched up. Also useful for comparing to files that have gone through different conversions or changes, such as transparency flattening, where only a bitmap compare will work since compare on a flattened PDF will highlight all the atomic regions. Hover over a highlighted area in the resulting report PDF to see a description of the differences. Click on highlighted areas to see before-and-after comparisons of images. If the new image is a corrected version of the older image (rather than a completely different image), changed areas of the image are highlighted. Click on a highlighted area, and Acrobat displays a "difference" image that may make it easier to pinpoint the changes. The Compare Documents result is a PDF, and can be saved and reviewed with the job at any time. Adobe Creative Suite 4 Printing Guide 109

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Adobe Creative Suite 4 Printing Guide
109
Comparing Documents
°e Compare Documents feature is greatly enhanced in Acrobat 9 Pro. To launch the feature,
choose Document > Compare Documents (in Acrobat 8, this feature was under the Advanced
menu). You can choose from any two currently open files, or browse for two PDFs to com-
pare. Designate the older and newer file, specify the type of documents you are comparing,
and Acrobat generates a PDF with the results of the comparison. Whereas previous versions of
Acrobat outlined changed areas in pink, Acrobat 9 builds a very detailed report, highlighting
every area that differs between the older and newer file.
Compare Documents
Choose two PDFs for comparison, specify a
page range for each, and choose a document
description — reports, presentations, or
scanned documents — and click OK°
It’s important to choose the correct document description for optimum results:
•
Reports, presentations and magazine layouts: Multiple page documents, with text
flow from page to page, and objects crossing the gutter on facing-page spreads.
•
Presentation decks, drawings, or illustrations: Page-independent files; there is no
connection between pages other than page order. No text or graphics spanning con-
necting pages.
•
Scanned Documents: °is option is a bitmap- only comparison. It converts the pages
to bitmap, if they are not already, and compares the bitmaps. Since this comparison
does full pixel-based bitmap analysis, it will know if two versions of an image are
different. Useful for comparing two images when one has been touched up. Also use-
ful for comparing to files that have gone through different conversions or changes,
such as transparency flattening, where only a bitmap compare will work since com-
pare on a flattened PDF will highlight all the atomic regions.
Hover over a highlighted area in the resulting report PDF to see a description of the differences.
Click on highlighted areas to see before-and-aſter comparisons of images. If the new image is a
corrected version of the older image (rather than a completely different image), changed areas of
the image are highlighted. Click on a highlighted area, and Acrobat displays a “difference” image
that may make it easier to pinpoint the changes. °e Compare Documents result is a PDF, and
can be saved and reviewed with the job at any time.