The PDF/UA (PDF/Universal Accessibility) format is a subset of PDF designed to store any electronic documents in order that they be accessible to people utilizing assistive technologies. The PDF/UA specifications primarily target people with disabilities, such as the blind using text-to-speech screen readers. The PDF/UA format is developed, supported, and standardized by AIIM (Association for Information and Image Management). In 2007 the International Organization for Standardization commenced PDF/UA review as an ISO standard.

See also: PDF/A, PDF/E, PDF/X.

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