👋 Hi there! Welcome to 🔬speedscope, an interactive flamegraph visualizer. Use it to help you make your software faster.

Drag and drop a profile file onto this window to get started, click the big blue button below to browse for a profile to explore, or click here to load an example profile.

See the documentation for information about supported file formats, keyboard shortcuts, and how to navigate around the profile.

speedscope is open source. Please report any issues on GitHub.