The guide discusses using Postman in conjunction with the k6 load testing tool to efficiently test APIs by converting Postman collections into k6 scripts. It explains the process of using the postman-to-k6 converter to transform a Postman collection into a k6 script, which can then be used to perform load tests on APIs, highlighting the capabilities and limitations of both tools. The text provides a step-by-step approach for installing necessary tools, converting collections, and running tests, emphasizing the strengths of using k6 for load testing compared to Postman’s focus on API functional testing. It also covers the metrics and features supported by k6, such as WebSocket testing, while noting the importance of rewriting scripts for better maintainability after the initial conversion. The article aims to facilitate onboarding to the k6 platform, promoting its integration capabilities and encouraging users to utilize Grafana Cloud for enhanced performance testing.