Chromium alike browsers have embedded tool for visual performance profiling on about:tracing (chrome://tracing for Chrome), which uses specially crafted json file as input. The thing I liked about it, is that it has very simple, yet flexible input format, and it wasn’t hard to build a profiler upon it.
I don’t use chromium-based browsers, and installing one just for this feature is bloat. Is there any (standalone) open source tools for visual profiling like this?
Here is a video fragment of how it looks like: https://youtu.be/xlAH4dbMVnU?t=952
