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PDF Error - Unable to determine the language for page content in tag

PDF Accessibility | Fixing the primary language

Last updated: September 2025

Issue: Unable to determine the language for page content in tag

Meaning: This error means the document does not have a specified language for its tagged content, which can impact how screen readers interpret and pronounce the text.

Fix: Check for Accessibility and set the primary language for the document.

💡 Note: Streamline staff are website accessibility experts, not PDF remediation specialists. We’re unable to provide direct support with remediation software or techniques. These articles and videos are here to be helpful, but if you need solutions, see our Document Remediation Options article — it covers DocAccess, DIY approaches, and professional paid remediation services.

If you use Adobe Acrobat to create your PDFs watch this video: