A two-column scientific PDF in French, with a sidebar in German and footnotes in Latin. A naive extractor reads across columns, producing nonsense. Robust solutions combine line clustering with whitespace analysis and column detection (e.g., camelot or pdfplumber ’s table heuristics). But true generalization requires training on multilingual table corpora—extremely scarce.
The library uses a Document model to define the source file and target language before processing. multilingual-pdf2text