FPSTester

What is FPSTester?

FPSTester offers free browser-based tools to check how your device and display are performing. The main FPS test measures real-time frame rate in your browser, so you can see actual rendering speed instead of a theoretical score. It also includes tools for refresh rate, screen size, mouse polling rate, reaction time, dead pixel checking, and even a dead pixel fixer. Everything runs online with no downloads or installs. It’s built for quick checks, simple comparisons, and getting a better feel for how your screen, GPU, and browser are behaving right now.

Key features

• Measures real-time FPS directly in your browser.
• Compares frame rates with a visual animation test.
• Checks monitor refresh rate in just a few seconds.
• Shows screen resolution, DPR, aspect ratio, and viewport.
• Tests mouse polling rate and reaction time.
• Scans for dead pixels and tries to fix stuck ones.