Yes, it is entirely free to use, and the QR Codes created are yours to keep indefinitely. They will never expire, but will only operate as long as the content is not changed. For example, if your LinkedIn QR Code is linked to your profile and you change your username, the QR Code will go to a LinkedIn error page.
Just choose the "Link to your profile" option and enter your LinkedIn handle without the @ sign to get a LinkedIn profile QR Code.
All QR Codes generated by our generator are free to use for both personal and commercial purposes.