...At the current stage of development, OPolyglot offers three key features:
Simple Translator: A convenient tool for classic translation of typed or copied text.
Document Translator: The app helps translate PDF documents.
Screen Translator: A smart feature that allows you to take a screenshot of any screen area, automatically recognize the text (OCR), and instantly translate it.
AppImage: https://sourceforge.net/projects/opolyglot/files/v0.3.1/OPolyglot-x86_64.AppImage/download
snap: https://snapcraft.io/opolyglot
flatpak: https://sourceforge.net/projects/opolyglot/files/v0.3.1/opolyglot-x86_64.flatpak/download
windows: https://sourceforge.net/projects/opolyglot/files/v0.3.1/opsetup.exe/download
source code: https://github.com/fenenko/OPolyglot