Problem: Currently Commons does not have a mechanism to provide high-quality image support, and while there are high quality IIIF sources available there are concerns over user data privacy and loading of third-party content that limit the adoption of these sources.
Proposed solution: Provide/Implement a IIIF server either via Commons or as a ToolForge/WMcloud hosted tool that is able to provide IIIF support for the ProofreadPage zooming and panning interface via a gadget interface.
Who would benefit: Wikisource editors, GLAM partners