ImageFlow is licensed under a Creative Commons Attribution-Noncommercial 3.0 Unported License. This means you need the author's permission to use ImageFlow on commercial websites.
Commercial Website20 €
If you want to use ImageFlow for a commercial website, you get the author's permission by filling in the domain name (of the website you want to use ImageFlow on) and paying the fee.
If you want to use ImageFlow for your personal website, your family's photo album, a school project or a non-profit organisation you don't need the author's permission. You can simply use ImageFlow for free.
When you like using ImageFlow and feel a donation would be a nice way to support ImageFlow, it will be highly appreciated.
By downloading the ImageFlow package you accept the license conditions above.