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UPDF
UPDF is an AI-assisted PDF editor with built-in OCR and chat-with-PDF, useful for edits our free tool can't handle.
We focus on common cases; UPDF adds an AI layer for asking questions about the document content.
OCR PDF
Convert scanned PDF pages to editable, searchable text — extract text from any scanned document, image-only PDF, or photo of a page. Runs locally in your browser.
OCR accuracy depends on image quality. For best results, use clear scans at 300 DPI or higher. Handwritten text and stylized fonts may have lower accuracy.
Drag & drop a scanned PDF here, or click to browse
Select PDF File
Maximum file size: 128 MB
All processing happens locally in your browser. Your file is never uploaded.
OCR Multilingual PDF — Recognize Mixed Languages at Once
Got a PDF with English mixed with Spanish, French, German, or Chinese? Our multi-language OCR recognizes multiple scripts in a single document, producing a unified searchable PDF. No upload, no account, no daily limits — perfect for bilingual contracts, international reports, and academic papers.
100% FreeNo UploadNo Sign-upMulti-Language Engine
How to Use
- Upload Your PDF: Drop the multi-language PDF in. Whether it's an English-Spanish legal contract, a Chinese-English academic paper, or a trilingual menu, our OCR handles mixed scripts in one pass.
- Select Languages: Pick all the languages present in your document. Common pairings like 'English + Spanish', 'English + Chinese (Simplified)', or 'English + French + German' are preconfigured. For unknown combos, select up to 4 languages manually.
- Run Multi-Language OCR: Click 'Start OCR'. Tesseract.js auto-detects script boundaries and runs the appropriate language model on each region of the page. Mixed-script pages process cleanly without manual page splitting.
- Download Searchable PDF: Save the output. It contains the original layout plus a unified text layer covering every detected script. Copy text from any paragraph — English, Spanish, Chinese characters all flow correctly to your clipboard.
Why Choose This Tool
- 100% Local Processing: Files are processed entirely in your browser using JavaScript — never uploaded to any server.
- No Limits: No file count or file size restrictions. Process as many files as your device can handle.
- No Sign-up: Free forever, no account needed, no email required. Open the page and start.
- Private by Design: Nothing is sent to any server. Close the tab and your files are gone forever.
Common Questions
Can OCR handle a PDF in multiple languages?
Yes. Our PDF OCR tool supports multi-language recognition in a single document. Configure the language set (e.g. 'English + Spanish') before running, and Tesseract.js will detect script boundaries and apply the right model to each text region. The output is a unified searchable PDF covering every language present.
What language combinations are supported?
We support any combination of the 100+ Tesseract.js languages, including: English + Spanish (LatAm contracts), English + Chinese Simplified (Chinese tech docs translated to English), English + French (Canadian government docs), English + Arabic (Middle East legal), Spanish + Portuguese (Latin America).
How accurate is multi-language OCR?
Accuracy is similar to single-language OCR for each script (95-98% for clean printed text). Mixed-script pages may see slightly lower accuracy at script boundaries (e.g. Chinese characters followed immediately by Latin text). Use higher scan DPI for better boundary recognition.
Will my multilingual PDF be uploaded?
No — all OCR runs in your browser via Tesseract.js WebAssembly. Whether your document is a confidential bilingual contract, proprietary academic paper, or internal corporate memo, the file never leaves your device.
How do I extract text from a Chinese-English PDF?
Open our PDF OCR tool, upload your PDF, select 'English + Chinese (Simplified)' from the language picker (or 'English + Chinese (Traditional)' for Taiwan/Hong Kong), then click 'Start OCR'. The output preserves all Chinese and English characters in a unified text layer.
Is the output searchable for Ctrl+F?
Yes — once OCR completes, open the output PDF in any reader and Ctrl+F searches the text layer. Searches match across language boundaries (e.g. you can find English words even on pages that mostly contain Chinese).