Worked on enhancing developer tooling documentation within the flutter/website repository, focusing on performance profiling for Flutter applications. Authored detailed documentation for the --profile-startup flag in the Dart and Flutter CLI, clarifying its impact on the VM sample buffer during CPU profiling and outlining procedures for discarding samples after the buffer reaches capacity. This contribution aimed to reduce confusion for new users and support accurate profiling workflows. Utilized Dart, Flutter, and Markdown to deliver clear, actionable guidance. The work addressed a targeted need in performance tooling documentation, aligning with broader goals to streamline profiling and improve developer onboarding experiences.