Docuscan Plus will read PDF files, even those consisting only of graphical representations of text. You can select files from within Docuscan Plus, or you can have your Mac open PDF files with Docuscan Plus instead of Preview or some other program.
Reading a PDF from Docuscan Plus is as easy as scanning a print document. Start by selecting the "New document" button and activating with VO+spacebar or just the spacebar. Then, tab to the "Scan a PDF" button and press it the same way. You will be presented with the standard Mac file selection dialog. Simply locate your PDF file and press the "Open" button. You will be presented with an HTML element. To read your PDF, or to check the status while it is being recognized, interact with the HTML area, and read with standard Web navigation commands.
If you like, you can save the results of the scan. Stop interacting with the HTML area, then use VO+right arrow to navigate to the "save" button, which is the next control to the right. Press the spacebar or VO+spacebar, then type a name for your document into the edit field and press the "Save" button. At that point, your document will be saved to the Serotek servers, and you will be returned to the Docuscan Plus main screen. Remember that documents are saved first to the Serotek servers. If you want to save a copy to your computer, you can do so from the "Manage documents" screen.
Docuscan Plus can open your PDF files from the finder or anywhere that you can select an application to open files. You can set Docuscan Plus as the default application for PDF files instead of Preview, or you can open an individual PDF file with it.
If you prefer using Docuscan Plus to read your PDF's, you can set it as the default application for opening PDF files. To do this, find a PDF file, then press cmd+i to open the file info screen. Navigate to the "Open with" control. Voiceover will say, "Open with, Disclosure triangle". Press VO+spacebar on this control to expand it, if it isn't already expanded. Then use VO+right arrow to find the Popup menu of compatible applications. Down arrow until you get to "Docuscan Plus", then press VO+spacebar. Navigate to the "Change all" button and again press VO+spacebar to have Docuscan Plus open all PDF files. Close the file info window with CMD+w.
If you don't want Docuscan Plus to be your default PDF reader, but just want it to read one file, navigate to the file you want to open. Once you get to the file, interact with it to be sure it is properly selected. Then press VO+shift+m to bring up the context menu. Use the down arrow to get to "Open with, submenu", then press the right arrow to expand the menu. Select "Docuscan Plus" with the up and down arrow keys and press return.
When the PDF file opens in Docuscan Plus, simply interact with the HTML content, and use standard Voiceover commands to read the document. See the previous section for details on saving your work.