OCR PDF
使用OCR使掃描的PDF可搜尋。從圖像和掃描文檔中提取文本。
上傳 PDF 文件
關於此工具
OCR PDF使用光學字符識別從PDF中的掃描文檔和圖像中提取文本。將基於圖像的PDF轉換為可搜尋、可選擇文本的文檔。
支援多種語言，確保無論文檔語言如何都能準確識別文本。在新增可搜尋文本層的同時保留原始布局。
所有OCR處理都在您的瀏覽器中進行，確保您的文檔保持隱私。
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. 數字化存檔 is a common example: 使掃描的文檔存檔可搜尋。
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 處理並下載, 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 "上傳掃描的PDF": 拖放您的掃描PDF或點擊選擇。 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.
使用方法
上傳掃描的PDF
拖放您的掃描PDF或點擊選擇。
選擇語言
選擇文檔語言以獲得準確識別。
處理並下載
點擊處理運行OCR並下載可搜尋的PDF。
使用場景
數字化存檔
使掃描的文檔存檔可搜尋。
文檔搜尋
在掃描文檔中啟用文本搜尋。
文本提取
從掃描文檔中提取文本以供編輯。
常見問題
支援哪些語言？
支援100多種語言，包括英語、中文、日語、韓語等。
原始布局會保留嗎？
是的，原始視覺布局會保留，並新增可搜尋的文本層。
OCR有多準確？
準確性取決於掃描品質，但對於清晰的文檔通常超過95%。