Shared element transitions is a proposal for a new API that allows for transition animations when navigating between different application views, for both Single-Page Applications (SPAs) and Multi-Page Applications (MPAs) .

See the link above for a lot more details, plus various issues discussing different use cases and aspects of the current
prototype spec and implementation. I'd like to emphasize that this is just a prototype built to gather feedback, not a proposed thing to ship as-is.

We'd like to discuss the use cases this API is aimed to solved, plus share our findings so far from prototyping, with the CSSWG, and gather feedback.

@khushalsagar @jakearchibald @ianvollick @vmpstr