Optical Character Recognition, or OCR for short, is defined as a technology that allows you to convert different types of documents, such as scanned documents, PDFs or images captured by a digital camera, into editable and searchable data.
Google Drive has OCR reader technology built into its system. This technology allows you to Convert PDF and photo files to text, simply by opening them as a Google Doc.
How can Google's OCR reader help my students?
For starters, when documents have been transformed, it allows you or your students to use any of the text-to-speech options available to your students.
Using OCR to transform your PDFs also allows you to update information within a PDF or make any necessary changes before sharing with students.
Google offers support for using OCR at: Convert PDF and photo files to text.