Start With the Measurement Question
Before choosing a counter, state the question precisely. “How smoothly is this browser animation being scheduled?” is different from “How many frames does this game engine render?” and both differ from “What refresh mode is my monitor using?” A tool can only answer a question if it has access to the relevant layer.
For browser cadence, use requestAnimationFrame() interval sampling such as the FPS Tester homepage. For native game FPS, use a trusted in-game counter, platform overlay, or presentation capture. For monitor Hz, combine operating-system settings with a browser cadence estimate. For motion artifacts, use a controlled visual pattern and your observation rather than an FPS number alone.
How to Test Browser FPS
Place the browser fully on the intended display, keep the tab visible, set the Stress Level, and select Start Test. Let warm-up complete, then stop manually after the planned observation time. Close unrelated heavy workloads only if you want an idle baseline; leave them open if the goal is to observe the normal loaded environment. Record browser version, active display, refresh setting, power mode, stress setting, and elapsed time.
Read average FPS as 1000 / mean frame interval, not as a complete quality grade. Check median frame time, 1% low, P99, jitter, and timing spikes. Repeat at least three times and change one condition between groups. Browser FPS often follows display refresh and cannot predict performance in a native game.
How to Test Native Game FPS
Use the game’s own counter when it is documented and sufficient, or a reputable platform or presentation-analysis tool that supports the game and graphics API. Define a repeatable scene, route, save, or built-in benchmark. Keep resolution, quality settings, upscaling, frame generation, V-Sync, limiter, and display mode recorded. Warm the system and repeat runs.
A game’s average FPS alone is incomplete. Capture frame time and lows when the tool supports them, and confirm its exact formula. Anti-cheat systems may restrict overlays; follow game rules and official guidance. Do not infer native performance from a web page, because the browser cannot inspect the game’s render loop or workload.
How to Measure Frame Consistency
Use raw interval or presentation-time data and inspect median, P95, P99, 1% low, variability, and a time series. Long frames create tall peaks. A broad or multimodal distribution can indicate uneven pacing. Minimum FPS is often one extreme and may be less representative than a slow-tail average. Confirm that hidden, paused, loading, or menu periods are handled intentionally.
FPS Tester excludes warm-up, stops on hidden tabs, requires minimum samples for tail metrics, and publishes formulas. Native tools have their own capture boundaries. Never compare 1% low values from different definitions as though the labels guaranteed identical calculations.
How to Check Monitor Hz
First inspect the operating-system display mode for the exact active monitor. Then place the browser on that display and use the refresh-rate test as an observed cadence check. A stable estimate near 59.94, 60, 120, 144, or another standard supports the configuration, but does not replace a hardware or EDID read.
If the browser appears capped at 60, check window placement, mixed-refresh monitors, power saving, a dock or cable, remote sessions, and dynamic refresh. Do not call the estimate native game FPS. Refresh rate is a display property; content FPS is a production rate.
How to Inspect Tearing and Motion Blur
Tearing, stutter, and blur need different observations. A moving high-contrast edge with horizontal guides can make a tear line visible. A pursuit target with crisp internal detail helps compare motion clarity. A frame-time graph helps find stutter. Neither visual page can automatically certify a display or isolate panel response time.
Use the same speed, contrast, refresh setting, viewing distance, and room conditions when comparing display options. Stop if motion or flashing causes discomfort. A camera recording needs synchronized pursuit and suitable shutter behavior to become a meaningful measurement; a casual phone video can add artifacts.
A Practical FPS Testing Checklist
Define the layer, choose a tool that observes it, establish controlled settings, warm up, record enough samples, and repeat. Compare distributions rather than one maximum. Note any screen recording, background load, battery state, or display move. Keep technical claims within what the source exposes. A browser result is browser-observed; a game result needs native-game telemetry.
Use the homepage for browser cadence, FPS counter for continuous monitoring, frame time or stability for consistency, refresh rate for a display-cadence estimate, tearing and blur patterns for visual inspection, and a game-native counter for external software. That decision framework is the safest answer to how to test FPS accurately.