OCRfolio: PDF Library & OCR

Make scanned PDFs searchable, with text you can select and copy. OCRfolio recognizes text on your Android device and adds an invisible text layer to a separate PDF, keeping the original unchanged. Your PDFs and their text are not uploaded.

Add a scanned PDF, let OCR recognize its pages, then search the recognized text or select and copy it. Keep the result in your library, find matching pages across indexed documents, or export the searchable PDF. Starting a new scan requires an ad and an internet connection.

OCR for scanned PDFs
PDFs without usable text are queued for on-device OCR after import. Follow page progress and estimated time remaining while processing continues in the background. PDFs with usable embedded text are indexed without OCR. Search becomes available as their text is indexed.

Your original stays unchanged
Work with PDFs of up to 999 pages. The library keeps your original as it is and adds a separate searchable copy. Export a copy anywhere with the Android save dialog.

A library for your PDFs
Keep imported PDFs and their searchable copies together. Organize them in folders, select several files at once, and drag them where you want them.

Find recognized text across documents
Search the PDFs indexed in your library. Matching pages are grouped by file. Open a result at its page and see matching words highlighted.

Select, copy and read
Select text with handles and copy it. Use contents, thumbnails, bookmarks and go to page. Choose single page, two pages or continuous scrolling, with a dark theme.

Recognition languages
Reads English together with Korean, Chinese, Japanese, French, German, Spanish and other Latin-script languages, Russian and other Cyrillic languages, Greek, or Arabic. Set a default language or choose one for each file.

Documents stay on your device
Recognition uses models inside the app. There is no account, and your PDFs and their text are not sent to any server.

Good to know
Results depend on the scan: clear, straight, printed pages work most reliably. Handwriting, very old or low-contrast pages, and complex layouts may come out incomplete or out of order.
Password-protected PDFs stay in the library but cannot be scanned yet.
App screens are available in English, Korean, Japanese, Simplified and Traditional Chinese, Vietnamese, Hindi, German, French, Spanish, Italian, and Portuguese.

OCRfolio is supported by ads. An ad is shown before a new scan starts, so starting a scan needs an internet connection. Reading and searching the PDFs already indexed in your library works offline.

Recent changes:
• The app now sends usage statistics through Google Analytics to help improve it. PDFs, recognized text, file names and search words are never sent.
• You can turn this off in Settings > Storage & privacy > Send usage statistics.