WebGL Copying an Image to Clipboard

Hello!! Been fiddling around with copying and pasting with webgl, and am currently in need of taking a texture from unity, and copying it to the clipboard.

I am pretty sure this is impossible, directly, after searching around quite a bit. If I'm wrong about that please let me know, but in the meantime, I am trying to figure out if there's a way to display the image in say, a javascript popup, which I can then right click on and copy it from there. I'm currently doing a similar trick to let me paste in text, but am unfamiliar with javascript and unsure how to do it with an image.

Thank you!!

 

Hello, I'm also trying to do this. Have you found anything?