Unverified50% confidenceFactExact time
Scanned PDFs have no text layer, so ordinary PDF converters cannot extract text from them and must go through an OCR path.
1
Sources
50%
Confidence
Long-term
Relevance
10/13/2026
First Seen
Sources
Related Entities
Related Claims
Unverified确定性解析工具如PyMuPDF和pdfplumber无法处理扫描件或手写内容,因为这类文档没有可解析的文本层77% similarUnverifiedThe text layer of digitally generated PDFs is generally clean and extractable, while real scanned documents (handwritten annotations, low-quality tilted and stained scans, checkbox and signature areas, cross-page broken tables) are the primary failure scenarios for OCR.76% similarUnverifiedThe PDF editor's automatic table recognition in ONLYOFFICE Docs 10.0 relies on the text positions and line vectors implicit in the PDF, and is often ineffective for scanned documents or pure-image PDFs.71% similar
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