Unverified50% confidenceFactExact time
原生PDF的文字以字符编码形式存储，可以直接复制、搜索和提取，无需OCR；扫描型PDF本质是图像，必须通过OCR技术识别
1
Sources
50%
Confidence
Long-term
Relevance
8/9/2026
First Seen
Sources
Related Claims
VerifiedPDF is essentially a page description language oriented toward printing, storing the absolute coordinates of characters rather than semantic structure internally, leading to parsing challenges such as the need for OCR with scanned versions, disordered reading order in multi-column layouts, and loss of row-column relationships in tables.77% similarUnverifiedTraditional OCR technology excels at converting image text into machine-readable text, but has limited ability to understand the semantic structure of documents.72% similar
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