During May 2025, Alex Coplan developed end-to-end image loading performance instrumentation for the facebook/react-native repository, focusing on enhancing observability and optimization workflows. He designed and implemented the FBImagePerfImageInfo structure in Objective-C++, enabling richer telemetry and metadata propagation throughout the image loading pipeline. Alex extended the completion callback to include detailed metadata, supporting more granular performance analysis. To ensure backward compatibility, he introduced the RCTLoadImageURLFromLoader API while deprecating the older loadImageForURL signature. His work leveraged skills in API design, backward compatibility, and iOS development, providing a robust foundation for future performance tuning and debugging in image loading operations.