Hey, great utility! So handy for bulk file conversion, I used it recently to resurrect an old game manual.
This tool would be useful to those unfamiliar with GitHub / software development, and having an easy "Download Encoding Checker" button at the top of the readme might help. It would just link to https://github.com/amrali-eg/EncodingChecker/raw/master/App/EncodingChecker.exe.
Similarly, Windows Smartscreen blocks the program on first run, I believe due to no code signing certificate(?). This will probably scare some people off!