this post was submitted on 19 Oct 2024
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CC BY-SA 4.0 is one way compatible with GPLv3.
It does mean that anything released under older CC SA licenses aren't, so they can't be used in GPL projects. And MIT isn't compatible at all.
Wow I read that. And it means one can take the CC-BY-SA 4.0 work and relicense it as GPLv3. Its' not just about being compatible in a project, it literally means re-licensing is allowed. But that is only for the adapted work. Meaning if you change something from his work, you are able to release your work as both licenses. While the original untouched work is still CC-BY-SA 4.0 only. So a collection has no rights to make changes to its original license.
It means a GPLv3 project can use something licensed as CC BY-SA 4.0 by converting it to GPLv3, as is required. E.g using a CC BY-SA photograph as a background or a splash image in a program.
And while you technically can't take the original, yeah, practically everything except "here is the image file alone in a folder" counts as modifying and a derivative work. Resize it, crop it, change a .png to a .jpg etc - all modify the original work.