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Knowledge Base Article: KB351 - Created On: Dec 15, 2011 09:01 AM - Last Modified: May 2, 2012 06:23 AM
I have an image based document I would like to convert to a text searchable document.
Note, this will create documents searchable and text selectable(not including font and format). It will NOT make it a fully editable text based documents.
First open the PDF document you would like to OCR. Go to the Document menu and choose the OCR icon or 
: OCR Pages... You may also press Ctrl+Shift+C.
Both these actions will open the OCR Pages dialog.
The OCR Pages dialog is split into three sections Page Range, Recognition, and Output.
Page Range -
All - This option will select all pages in the document.
Current Page - This option will select the current page.
Pages - Allows you to choose a selection and/or range of pages.
Recognition -
Primary Language - This option allows you to specify the language used in the OCR process. If the language you need is not listed in the drop down menu you can press the More Languages link to navigate to the Languages download page.
Accuracy - This option allows you to set the resolution of the OCR scan. The lower the setting, the smaller the file size. As well as a shorter processing time and diminished Accuracy.
Output -
Preserve Original Content & Add Text Layer - This option will not change the content of the target document but creates another layer within the document and overlays the text over the image of the text.
Convert Page Content to Image only - Add Text As a Layer - This option will take a document that has both images as well as text and convert them both into a consolidated image. This option also enables the Images Quality option which dictates the end resolution of the consolidated image. When this process is performed on an image only document, it doesn't make changes to the image other than to adjust the resulting dpi.
WARNING!! This option is destructive. It will recreate your document as a new image and in the process cast away the original document. Once saved, this is IRREVERSIBLE, so please use a copy of your original document when using this option.
Finally - Press Ok and your document will be processed.
** By default the PDF-XChange Viewer build 200 or later will install base OCR language support for English, French, German and Spanish. Additional Language Packs are available here: http://www.tracker-software.com/pdf-xchange-viewer-ocr
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