Creating accessible versions of PDF files can be quick and easy. 

First, Apply OCR to a Scanned PDF Document

You will want to use Adobe Acrobat's OCR Text Recognition feature to covert the document into a format readable by screen readers. 

  1. Open the PDF file in Adobe Acrobat.
  2. In Acrobat, select View -> Tools -> Text Recognition.
  3. In the Recognize Text window, click In This File.
  4. Designate the desired pages and click OK.

At this point, Acrobat applied OCR to the scanned document and you can search for text within the document.

Then, Check and Fix Suspected OCR Errors

  1. Open the PDF file.
  2. In Acrobat, select View -> Tools -> Text Recognition
  3. Click Find First Suspect (Acrobat identifies suspect characters or words for your evaluation).
  4. To make corrections, click on the highlighted object in the document and type the corrected text.
  5. Click Find Next
    1. If the text is already correct, click Accept and Find to move on to the next one.
    2. If the suspect isn’t a word, click Not Text.
  6. When you are done, click Close.

Adobe Accessibility Checkers

Using the Acrobat X Pro Accessibility Checker

Using the Acrobat XI Pro Accessibility Checker

Using the Acrobat Pro DC Accessibility Checker