FPSMeter – Sexy and Fast FPS Meter with Javascript

FPSMeter is a simple JavaScript library for sexy, fast, and themable FPS meter.

FPSMeter can measure:

• frames per second
• number of milliseconds between frames
• number of milliseconds it takes to render one frame

FPSMeter rendering is optimized and chained to requestAnimationFrame (with a polyfill for older browsers), so it should be as smooth and as fast as possible. It also supports multiple instances on one page, has show/hide methods that also pause the meter rendering, and color heatmaps that make themes even more pretty!