Paste your HTML, and the tool strips out every comment — including multi-line and conditional comments — leaving clean code.
Yes, it removes all comments including IE conditional comments (<!--[if IE]>). Be careful if you rely on conditional comments for legacy browser support.
Comments increase file size and may expose information. Remove them in production builds. Keep them in source code for documentation.
No, removing comments only deletes text between <!-- and -->. It doesn't affect HTML structure, scripts, or functionality.