That's fine as a long-term goal, but it's pretty directly in conflict with the short-term goal of getting support for this image format into all browsers. If y

That's fine as a long-term goal, but it's pretty directly in conflict with the short-term goal of getting support for this image format into all browsers. If you want this in e.g. IE, someone will have to re-implement it with a license compatible with IE. And there will be compatibility bugs, non feature-parity, etc. I mean, I get it if you'd like closed-source browsers to go away. You're entitled to that position. But that's not the effect that making this library GPL will have.