This article details how to perform OCR, and provides tips on creating better quality document scans. Screen readers and other assistive technologies are not able to read text off of images, or interpret the structure of documents that are saved as images. If you scan a document and save it as a PDF, you need to perform Optical Character Recognition (OCR) on it as a precursor to any additional accessibility checks. The most fundamental component of PDF accessibility is ensuring that any text on the document is searchable. Scanning physical documents and converting them to PDFs saves the entire document contents as images.
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