During May 2026, contributed to the spring-projects/spring-framework repository by implementing DataSize converters within the DefaultConversionService, enabling seamless conversion from String and Number types to DataSize objects. This work involved developing both StringToDataSizeConverter and NumberToDataSizeConverter, registering them with the conversion service, and ensuring comprehensive unit test coverage for valid, empty, and invalid input scenarios. By aligning DataSize conversion behavior with Spring Boot, the changes improved consistency and reduced boilerplate parsing in downstream applications. The project was executed using Java and the Spring Framework, with a focus on test-driven development and enhancing data integrity and developer productivity.