The ultimate open-source PDF remediation engine, combining AI-automated structural tagging with Human-in-the-Loop interface for perfect PDF/UA validation. Shift PDF compliance left. The pdf-a11y is a complete toolkit—CLI, REST API, and Web UI—that automatically fixes document tags, generat

Production-grade PDF language detection using fastText lid.176.ftz. Detects language per page, groups consecutive pages into segments, and splits PDFs by language — fully typed, thread-safe, and batch-ready.