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AutoTaggingEngine

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Selects the engine used to build the logical structure (tags) when converting a document to a tagged, accessible PDF (PDF/UA).

using Nutrient;

Values

NameValueDescription
AutoTaggingEngine.Heuristic0The built-in heuristic auto-tagger. Infers structure (headings, paragraphs, lists, tables, figures) from layout and font analysis. Fast and fully offline.
AutoTaggingEngine.Vision1The Vision-based auto-tagger. Uses document layout segmentation, reading-order detection and table-structure recognition to build a higher-fidelity structure tree. Does not generate figure descriptions.
AutoTaggingEngine.VisionVlm2The Vision-based auto-tagger with Vision Language Model enrichment. Adds generated alternate text for figures and summaries for charts on top of Vision. Requires a VLM provider to be configured (provider selection and credentials in the corresponding Vision settings); without one, tagging proceeds without descriptions.