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Tesseract OCR vs Scans to PDF: catalog facts
Tesseract OCR	Scans to PDF
Free Free and open source under the Apache licence.	Free Free and open source under the GPL-3.0-or-later licence.
Windows, macOS, Linux, Command line	Linux, Command line
Over a hundred languages, with trainable models Outputs searchable PDFs directly, not just text	Separate compression of text and background keeps scanned PDFs small Adds an invisible OCR layer so documents become searchable
Accuracy depends heavily on image preprocessing you must do yourself No interface of its own; it is a command line engine	Color and grayscale scans need preparation in other tools for good results Linux only
Downloadable app	Downloadable app
Open source	Open source
License: Apache-2.0	License: GPL-3.0-or-later
Not stated if an account is needed	No account needed
Not stated if it works offline	Works offline
Official website Full listing and sources Checked September 22, 2026	Official website Full listing and sources Checked October 1, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.