關於此工具
從掃描的 PDF 中提取可搜尋文字。使用 Tesseract 在本地執行。
OCR PDF — 提取文字
轉換從掃描的 PDF 中提取可搜尋文字。使用 Tesseract 在本地執行。
將 PDF 拖曳到此處
處理 ≤ 50.0 MB
架構層面的隱私保護
所有處理都在您的瀏覽器中進行。您的 PDF 永遠不會上傳到我們的伺服器。無需帳戶，無使用限制。
工作原理
- 1選擇 PDF — 永遠不離開你的裝置
- 2按需配置工具
- 3結果儲存到下載
Frequently asked questions
Is this OCR tool free?
Yes, completely free with no usage limits, no account required.
Will my PDF be uploaded to a server?
No. Tesseract runs in your browser via WebAssembly — your PDF never leaves your device.
Does the first use require an internet connection?
Yes. The first time you select a language we download ~12 MB of trained data from the Tesseract CDN. After that, OCR works fully offline.
Which languages are supported?
English, Spanish, French, German, Italian, Portuguese, Dutch, Korean and Japanese. Mix two with a "+" (e.g. eng+spa) for multilingual documents.
What format is the output?
A plain .txt file with the extracted text per page. PDF/A export with searchable text layer is coming in a future update.