Hi, so I'm basically trying to implement a share to social button in my game that will take a screenshot and upload to imgur. However, while my button works in editor and windows builds. it freezes the game on the webgl build on itch.io. Does itch.io not allow games to upload to imgur or interact with other website apis?

This sounds like an error in your game engine/game code that is causing the game to freeze. I would check the browser console to see if there’s any indication of what is going on.