Website: https://pch.github.io/kindle-formatter/
A simple tool for cleaning up Kindle highlights exported via the desktop app. The result is plain text you can paste to your note-taking app (Roam, Notion, Evernote).
Just open index.html in your browser. That's it!
No build process, no dependencies, no server needed.
Highlights are processed in the browser window and they aren't uploaded anywhere.