Kervoni OCR: self-hosted Tesseract.js 7.0.0 and tesseract.js-core 7.0.0 (Apache-2.0); Leptonica (BSD-style). English/Turkish trained data: naptha/tessdata, 4.0.0_best_int, distributed in @tesseract.js-data/{eng,tur} 1.0.0. npm packaging metadata declares MIT; upstream tessdata repository and tessdata_best model licenses are Apache-2.0 and are included. Original package licenses and bundled worker notices are preserved.
Sources:
https://github.com/naptha/tesseract.js
https://github.com/naptha/tesseract.js-core
https://github.com/naptha/tessdata
https://github.com/tesseract-ocr/tessdata_best
https://github.com/DanBloomberg/leptonica
No vendor source modification. Pinned archives, selected members, sizes and SHA-256 hashes: docs/operations/remaining-tools-2026-11-02/ocr-inputs.json in kervoni-core.