Optical Character Recognition (OCR) is a technology that converts different types of documents, such as scanned paper documents, PDFs, or images captured by a digital camera, into editable and searchable data. In Relativity, OCR is used to extract text from image files (like TIFFs or image-only PDFs) that do not have discoverable text. This process makes the content of these images searchable within the workspace, which is crucial for review and analysis. OCR can be run on a set of documents, and the resulting text is stored for indexing.