OCR PDF
从 PDF 中提取文本图层，以便您可以搜索、复制或重复使用内容。
Select PDF files
or drag and drop files here
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How to OCR PDF – Extract Text
1
Upload your scanned document
Select a PDF that consists of scanned pages or images of text.
2
Select output format
Choose whether you want a fully searchable PDF or a plain, editable text file.
3
Extract text
The Optical Character Recognition (OCR) engine reads the image and converts it back into machine-readable text.
Frequently Asked Questions
Does this work on scanned documents that are just photos of text?▼
该工具使用 pdf.js 引擎读取已嵌入 PDF 中的文本图层，因此它在已包含真实文本的 PDF 上效果最佳。没有文本层的纯图像扫描需要完整的光学字符识别，这需要服务器端处理（如 Tesseract OCR），而不是该工具执行的浏览器内提取。
How do I know if my PDF already has a text layer?▼
尝试在普通 PDF 查看器中选择或突出显示页面上的文本 - 如果您可以选择单个单词，则存在文本层，并且该工具将干净地提取它。
What output formats can I choose?▼
Pick a searchable PDF if you want to keep the original look while making the content selectable and searchable, or a plain text file if you just need the raw words to paste elsewhere.
这可以处理手写笔记吗？▼
No, this tool extracts existing digital text layers rather than performing image-based character recognition, so handwriting isn't something it can read.
Is my document processed on your servers?▼
No, text extraction happens entirely inside your browser using pdf.js, so your document's content is never uploaded anywhere.