How do I check my FPS online without downloading software?+
Just open this page and press Start, the tool measures your browser's frame rate using the high-resolution requestAnimationFrame timer and shows live FPS, frame-time and detailed stats. No downloads, installs or signup required.
What is a good FPS for a browser?+
For smooth web browsing, 60 FPS is the baseline. On high-refresh displays you'll want your average to sit close to your monitor's Hz, around 120, 144 or 240 FPS. Anything consistently below 30 FPS feels noticeably sluggish. Just as important, your 1% low should stay close to your average; a big gap means visible stutter even if the average looks fine.
What are 1% low and 0.1% low FPS, and why do they matter?+
They describe your worst frames. The 1% low is the frame rate during your slowest 1% of frames, and the 0.1% low covers the slowest 0.1%. A monitor can average 60 FPS but still feel choppy if a few frames arrive late, the lows expose that. This tool computes both by averaging your worst frame-times and converting them to FPS, so you can spot stutter that an average-only counter hides.
What does the stability score mean?+
Stability rates how consistent your frame-times are, based on their variance around the average. A score near 100% means every frame arrived at an even pace for smooth, fluid motion, while a lower score means bursty, uneven frames that read as micro-stutter even when the average FPS is high.
How does the render stress test work?+
When you pick Light, Medium or Heavy load, the tool animates 250 to 5,000 moving objects on a canvas while it measures. That's genuine GPU and compositor work, not a fake slowdown, so you can see how far your frame rate drops and how quickly your 1% low collapses under real rendering pressure. It's isolated to the browser tab and won't affect other applications.
Why does my FPS cap at 60 even though I have a 144Hz monitor?+
Browsers sync their rendering loop to your monitor's refresh rate, so if Windows or macOS is set to 60Hz your browser can't exceed 60 FPS. On Windows, set Settings → Display → Advanced Display → Refresh Rate to 144Hz; on macOS check System Settings → Displays. Then reload this page, the detected refresh rate at the top should update.
What causes FPS drops in a browser?+
Common causes include too many open tabs, extensions consuming CPU or GPU, disabled hardware acceleration, outdated graphics drivers, background software, thermal throttling on laptops, and pages with heavy JavaScript or animations. Compare a run with a big average-to-1%-low gap against a clean profile to isolate the culprit.
How do I know if browser hardware acceleration is on?+
Run a Heavy render-stress test twice, once with hardware acceleration enabled and once disabled (Chrome: Settings → System → 'Use graphics acceleration when available'). With acceleration on you should see a much higher, more stable FPS under load. A weak result under heavy load often means the GPU isn't being used.
Does this FPS test affect my whole computer?+
No. The measurement and the stress load run entirely inside this browser tab. They exercise the browser's render engine to measure performance, but they don't touch your other applications or make any lasting changes to your system.
Are my results saved, and is anything uploaded?+
Your best average FPS for each benchmark duration is saved locally in your browser so you can chase a new record, and nothing else is stored. No frame data, scores or device details are ever uploaded, every metric is computed on your device.
Can I use this to verify my game is running at 60 FPS?+
This tool measures your browser's rendering FPS, not in-game frame rates. For games, use the built-in overlay (Steam's FPS counter, F3 in Minecraft) or software like MSI Afterburner. It's ideal, though, for confirming your monitor and browser can actually sustain high frame rates before you enable 144Hz or 240Hz in your display settings.
Is this FPS test accurate?+
Yes. It records the exact millisecond timestamp of every frame using the browser's high-resolution timer, so the average, lows and stability come from real measured frame-times rather than estimates. The main limit is the browser itself: it can't report faster than your display's refresh rate, which the tool detects and shows so you always know the ceiling.
How do I check my screen's frame rate (FPS)?+
Start the test and it animates on-screen elements, measuring how many frames your browser renders per second using requestAnimationFrame. It reports your live FPS with no download needed.
What is a good FPS?+
60 FPS is smooth for general use; 120 or 144 FPS suits gaming monitors. The test shows your current frame rate and how stable it is under load.
Why is my FPS lower than my monitor's refresh rate?+
Background tabs, heavy pages or an overloaded GPU can cap frames below your monitor's Hz. Close other tabs and apps and re-run the test to see your browser's true rendering rate.
Why does my FPS cap at 60 on a 144Hz monitor?+
The browser may be limited by vsync, power-saving settings, or the display's active refresh rate. Check your OS and browser are set to the higher rate.
Does this test my whole computer?+
No: it measures your browser's rendering performance, which reflects but isn't identical to full-system or native-game FPS.
