OCR PDF
使用OCR使扫描的PDF可搜索。从图像和扫描文档中提取文本。
上传PDF文件
关于此工具
OCR PDF使用光学字符识别从PDF中的扫描文档和图像中提取文本。将基于图像的PDF转换为可搜索、可选择文本的文档。
支持多种语言，确保无论文档语言如何都能准确识别文本。在添加可搜索文本层的同时保留原始布局。
所有OCR处理都在您的浏览器中进行，确保您的文档保持私密。
Practical guidance before you use OCR PDF
Best for real document workflows
Best for scanned contracts, letters, forms, research pages, and image-only PDFs that need searchable or copyable text. 数字化存档 is a common example: 使扫描的文档存档可搜索。
Privacy and file handling
EasyPDFNex prioritizes local processing in your browser. That means supported PDF operations run on your device, not in a public cloud queue. For sensitive files, review the output before sharing it, close the browser tab after downloading, and avoid processing documents you are not authorized to edit.
Quality checks after processing
After you 处理并下载, open the result and check page order, text readability, signatures, links, and form fields. If the source file is scanned, encrypted, very large, or damaged, try a related workflow such as edit pdf, pdf to json, compress pdf before repeating the task.
Use the cleanest scan available. Straight pages, good contrast, and consistent orientation improve OCR accuracy. For OCR PDF, the first step is usually "上传扫描的PDF": 拖放您的扫描PDF或点击选择。 Search for names, dates, totals, and technical terms after OCR because recognition errors are most costly in those fields.
Editorial review note
This guidance is maintained by the EasyPDFNex editorial team and reviewed for practical PDF workflow accuracy. Tool pages are written to explain when a feature is useful, what to check before download, and where browser-based processing has limits.
如何使用
上传扫描的PDF
拖放您的扫描PDF或点击选择。
选择语言
选择文档语言以获得准确识别。
处理并下载
点击处理运行OCR并下载可搜索的PDF。
使用场景
数字化存档
使扫描的文档存档可搜索。
文档搜索
在扫描文档中启用文本搜索。
文本提取
从扫描文档中提取文本以供编辑。
常见问题
支持哪些语言？
支持100多种语言，包括英语、中文、日语、韩语等。
原始布局会保留吗？
是的，原始视觉布局会保留，并添加可搜索的文本层。
OCR有多准确？
准确性取决于扫描质量，但对于清晰的文档通常超过95%。