The Firefox Profiler is a web-based tool displaying profile data as a flame graph. It can show and display native profiling data, such as Linux perf. Profiles can be uploaded to the website and shared with other people.

# Capture the profile
$ perf record --call-graph <command>

# Convert the profile
$ perf script -F +pid > /tmp/test.perf

# Upload the profile to profiler.firefox.com