Uses external service for QR code generation (this fact is not stated in add-on description). Not safe. Especially, considering there are self-contained (offline) alternatives.

While it's working well, the following points have to be fixed:
• published under GPL3.0 but no link to check the source code
• no release note with the last update
• no link for support

URL-page to QR Code is not working.
Does encode a selected text.