https://github.com/charlesw/tesseract/
https://medium.com/@fatih_yildizli/tesseract-ocr-implementation-in-net-core-spring-boot-6f876a5d4ae5
language files
Copy to “./tessdata” (build to output)
Redistributable: download (x64) at https://docs.microsoft.com/en-US/cpp/windows/latest-supported-vc-redist?view=msvc-170
Apache License 2.0 — this package contains no license validation and no runtime limits. See LICENSE. A few companion packages are commercially licensed with a free tier; see the licensing overview.