Qt QML Profiler Skill

Profile a QML application and analyze performance bottlenecks.

Scope

This skill targets 2D QML / Qt Quick applications. Qt Quick 3D (quick3d qmlprofiler feature — Quick3DRenderFrame, Quick3DSync, Quick3DCullInstances, etc.) is not supported: those events are not extracted from the trace, not summarized in the report, and the anti-pattern reference in qml-performance-anti-patterns.md does not cover 3D-specific optimizations (mesh batching, material costs, shader variants, render passes).

If the profiled app uses Qt Quick 3D, 2D results are still valid but any 3D bottlenecks will be invisible in the output — inform the user and recommend using Qt Creator's profiler UI or a dedicated 3D profiler for those.