document-extraction-integrity

Gets data out of a document before anything treats it as a dataset, deciding first whether the file carries a text layer or has to be recognised, then checking the extracted values against the page they came from. Use when a source is a PDF, a word-processor file, a scan or a photograph of a receipt or a form, when a table has to be pulled off a page, when extracted text arrives with its columns interleaved, or when a number was read by recognition rather than typed.