PDF OCR Extractor
Extract highly accurate text from scanned PDF documents using advanced Tesseract OCR. Supports English, Tamil, and more. 100% processed privately inside your browser.
Tesseract.js Engine
English + Tamil
No Upload
Drop a PDF here or click to browse
Upload a scanned document to extract its text
PDF + OCR Engine = Editable Textdocument.pdf
Engine Settings
Page Range
Document Language
Extraction Accuracy (Scale)
Tamil OCR Note: The Tamil language model (~22 MB) will be downloaded from the Tesseract CDN on first use and cached. For best Tamil results, use "Maximum" accuracy scale and ensure the document has clear, unblurred text. Mixed documents with both English and Tamil should use "English + Tamil (Mixed)".
Accuracy Tip: Higher scale renders the PDF at a larger resolution before OCR. Use High or Maximum for small fonts, Tamil scripts, or blurry scans. PNG is used internally for zero compression artifacts.
Pages to Extract
Extracting Text...
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Initializing Tesseract Engine...
Extracted Content
Extract Text
Convert scanned PDFs and non-selectable documents into clean, editable text using Tesseract OCR. Supports English, Tamil, and more languages.
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Total Pages
Ready
Engine
Accurate Extraction — Uses PNG (lossless) rendering for zero compression artifacts, giving Tesseract the sharpest possible image for recognition.
Tamil Support — Fully supports Tamil (தமிழ்) text extraction. Select Tamil or English+Tamil (Mixed) for bilingual documents from Tirunelveli or any Tamil Nadu documents.
100% Private — The Tesseract engine runs entirely inside your browser via WebAssembly. No files leave your device at any point.
How to Extract Text
1
Upload File
Select your scanned PDF. The tool reads the page count securely in your browser without uploading.
2
Set Language
Choose English, Tamil, or Mixed. The engine downloads the language model on first run and caches it.
3
Adjust Range
OCR takes time. For large documents, use the Page Range tab to limit pages processed.
4
Extract & Copy
Click Extract. The text populates the editor, ready to copy or save as a .txt file.
Frequently Asked Questions
Why is the extraction process slow?
OCR works by rendering each page as a high-resolution image and running neural networks to identify characters. Running these networks inside a browser via WebAssembly is secure but CPU-intensive. Tamil text requires a larger model and more processing time than Latin scripts.
How do I get better Tamil OCR results?
For best Tamil accuracy: (1) Select Tamil or English+Tamil language, (2) Use Maximum accuracy scale (2.0x), (3) Ensure the scanned document is clear and not blurry. The Tamil model (~22 MB) is downloaded once and cached in your browser for future use.
What does the Accuracy Scale do?
The scale controls the resolution at which the PDF page is rendered to an image before OCR. A 2.0x scale produces a much sharper image, helping detect small fonts and complex scripts like Tamil. Higher scale = better accuracy but slower processing.
Is my document uploaded to a server?
No. The Tesseract engine and PDF.js library run entirely inside your browser as WebAssembly workers. Your PDF is parsed, rendered, and read locally. Only the language model files are fetched from a CDN — your document data never leaves your device.
No upload · No server · Tesseract.js in-browser · Tamil + English · Free forever · Pdf Pixy