Question 1

What types of PDFs is PDF OCR suitable for?

Accepted Answer

It's suitable for scanned documents, image-based PDFs, and other documents where text cannot be directly copied. The tool renders each page into a high-resolution image and then uses OCR to recognize it, outputting copyable and searchable plain text.

Question 2

Which languages are supported?

Accepted Answer

Supports English, Simplified Chinese, Traditional Chinese, Japanese, and Korean. You can select multiple languages simultaneously to recognize mixed-language documents. The recognition accuracy is related to the clarity of the original document.

Question 3

Will the PDF be uploaded?

Accepted Answer

No. PDF is always processed locally in your browser; the OCR engine and language data are downloaded from CDN on first use, then cached by the browser for offline reuse, and file content is never uploaded to a server.

PDF OCR

FAQ