Document migration
A Scan Can Become Structured Without Pretending It Was Born Structured
Keep the source image, OCR text, confidence and human corrections as distinct evidence layers.
The safe operating rule
Preserve the source. Label extraction and inference. Keep unknowns unknown. Record warnings and failures. Reconcile every batch.
What UD does not claim
No perfect conversion, 100% OCR accuracy, compliance preservation, legal equivalence, accepted archival-standard status or freedom from manual review is promised.