mrdoob/stats.js

Health v2 · maintenance only

Adoption not part of the score

9148 stars · 1189 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-29, confidence not recorded

A tiny JavaScript library that displays an on-page info box monitoring rendering performance, showing FPS, frame time in milliseconds, and allocated memory, with support for custom user-defined panels. It is commonly used alongside WebGL/Three.js applications and can also be injected into any page via a bookmarklet.

Use cases

• monitor fps in a browser game or WebGL app
• measure frame render time in milliseconds
• track javascript memory usage during animation loops
• overlay a performance stats panel on any web page
• debug rendering performance in three.js projects

When to choose

• you need a lightweight, zero-dependency FPS/frame-time overlay for canvas or WebGL rendering
• you want a quick bookmarklet to profile any web page's render loop
• you need custom performance panels with a minimal API

When to avoid

• you need full application performance monitoring with network, CPU, and user timing metrics
• you want server-side or Node.js performance profiling
• you need historical performance data, charts, or remote reporting

Facets

library · maturity maintenance

monitoring benchmarking developer-tools web-development frontend performance graphics browser fps-counter performance-monitor debug-overlay threejs-ecosystem bookmarklet javascript nodejs

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