Did you know? According to the World Health Organization, over 2.2 billion people worldwide live with vision impairment. For them, images in PDFs without alt text are simply missing information. That’s why alternate descriptions aren’t just a compliance checkbox – they’re essential for accessibility, usability, and inclusivity.
AI-Powered Alt Text for PDFs with OpenAI and PDFix Desktop
Adding AI-generated alt text to images in PDFs is now easier and faster with PDFix Desktop. Instead of writing every description manually, you can run OpenAI models inside Docker to automatically generate accurate alternate text for images, charts, and other visual elements at scale.
And because PDFix relies on External Actions, you’re not limited to one AI provider – new models can be integrated as they become available.
Key Features of Automated PDF Image Description
- Intelligent Generation – AI suggests accurate descriptions tailored to each figure
- Batch Processing – Run alt text creation across entire PDF collections
- Selective Auto-Tagging – Skip decorative images, focus on meaningful visuals
Results from AI-Driven Alt Text for Figures and Charts
Organizations using AI-driven alt text report:
- Faster remediation compared to manual workflows
- Reduction in repetitive tagging tasks for large document sets
- Consistent, high-quality descriptions across thousands of figures
- Compliance with PDF/UA, WCAG, and Section 508 requirements

Human Oversight in AI Alt Text Workflows
AI does the heavy lifting, but final review stays in human hands. Remediators can refine suggested descriptions to ensure compliance and accuracy, turning automation into a collaboration between AI efficiency and human judgment.
Watch the Tutorial: PDFix External AI Actions for Alt Text
Watch our video tutorial to learn how to add external actions into PDFix Desktop and easily run the alt text generation action across multiple PDFs.









