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Optimize PDFComing soonServer required

PDF Text Recognition (OCR) — Currently in the Works

A scanned PDF looks like text to the eye but is just a picture inside the file. OCR reads the characters from that picture and adds a searchable, copyable text layer.

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This tool isn't available yet

We don't build file pickers for features that can't actually run. Here's the current status and what it would take to ship it.

Support status and technical requirements for PDF OCR
Current statusNot available (in preparation)
Technology requiredTesseract (Apache-2.0) plus language training data, image pre-processing (deskew, binarize), and a job queue
DifficultyHigh
Estimated server cost$40/month and up, because CPU time per page is high; heavy use needs extra queue workers
External API neededOptional — a commercial OCR API is worth considering when accuracy matters

What you can do today

  • Text recognition in a scanning app

    Many phone cameras and document-scanning apps recognise text at capture time.

  • Get the source document

    Where possible, asking for the original electronic file instead of a scan wins on both accuracy and file size.

Some scripts are harder to recognize than Latin text due to combined letters and mixed vertical writing and tables. Offering a low-accuracy result as a "searchable PDF" would actually produce wrong search results, so we plan to introduce it after quality verification.

How are your files handled?

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This page has no file picker, so no data is processed. See the Privacy Policy and File Retention Policy for details.

PDF OCR FAQ

How accurate is it?
It depends heavily on the original resolution and font. A sharp scan at 300dpi or higher is practical, but a photo taken at an angle with a phone has many errors.
Does OCR make the file bigger?
A text layer is added, so it grows a little. In exchange, search and copy become possible.