ScreenTest Pro · Western Chase

Watch the same galloping cowboy sprite rendered at eight different simulated frame rates side by side, and see how frame rate alone changes how smooth motion looks on your screen.

Choose your device

Use the layout that best matches the screen you are testing.

Motion comparison · FPS targets

600 FPS
480 FPS
360 FPS
240 FPS
120 FPS
60 FPS
30 FPS
15 FPS

More display tests

Resolution & Scaling

Inspect browser dimensions and resolution patterns.

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Refresh Rate

Sample browser frame timing.

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Color & Pixels

Inspect colors, gradients and pixel defects.

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OLED & Motion

View patterns for image retention and motion.

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HDR

Explore reported HDR support and visual references.

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Touch

Check touch tracking and multiple touch points.

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Display Calculators

Calculate pixel density, aspect ratio and viewing distance.

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More screen tools

Run a focused check when you need more detail.

4K Resolution

View viewport, pixel ratio, aspect ratio and 4K reference sizes.

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Color & Grayscale

Inspect pure colors, gradients, black levels and brightness.

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Dead Pixel Check

Cycle solid colors to visually identify stuck or dead pixels.

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OLED Burn-in

Use a careful color cycle to inspect possible image retention.

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Can this prove my TV is true 4K?

No. The browser can report the signal and available screen metrics, but a TV may upscale an image. Use the test as a practical visual aid.

Why is my result stuck at 60 Hz?

Browser rendering, cable bandwidth, operating-system settings and TV input settings can all limit the measured result.

Can I use the test on an iPad?

Yes. Rotate the device, use fullscreen where supported and check the result in both portrait and landscape.

Does the test store my data?

No. The first version runs locally in your browser and does not require an account.

How many Hz do you need?

A simple refresh-rate guide for office work, gaming and esports.

Office & everyday screens

100–120 Hz is becoming a popular step up from 60 Hz for smoother scrolling, cursor movement and everyday reading.

Great for work, browsing and general use.

Mainstream gaming

144–240 Hz offers noticeably smoother motion for games. 144 or 180 Hz is a strong entry point; 240 Hz is a popular enthusiast target.

Your GPU and game settings still determine actual FPS.

Esports & extreme speed

360–540 Hz targets competitive players in fast games. Experimental and specialist displays can go higher, but 1000 Hz needs an extremely high frame rate.

Higher Hz does not automatically mean better image quality.
Important: A monitor’s maximum refresh rate is not the same as the FPS measured in a browser. Cable bandwidth, resolution, graphics settings, operating-system configuration and the display’s input mode all matter. Guide references: RTINGS, Currys and Tom’s Guide.

Color & Chroma Guide

Understand gamut, panel technology and color accuracy before you judge a display.

Color gamut

sRGB is the everyday web standard. DCI-P3 covers a wider range for HDR and cinema content. Adobe RGB is aimed at photography and print workflows.

More gamut can mean more vivid color, but accurate calibration still matters.

Panel technology

IPS usually offers strong color consistency and wide viewing angles. VA often delivers deeper contrast. TN can be very fast but may have weaker viewing angles and color performance.

Panel quality varies by model, not only by panel family.

Delta E & calibration

ΔE describes the difference between an intended color and the displayed color. Lower values are generally closer; a colorimeter is needed for reliable measurement.

Our browser tests are visual references, not laboratory calibration.
Color tip: A screen can cover 100% sRGB or a large portion of DCI-P3 and still need calibration. Match the screen mode to your content: sRGB for most web work, or a managed wide-gamut mode for photography and HDR.

Frame Rate Breakdown

What different frame rates look like and where they are commonly used.

15

15 FPS

Very choppy motion. Useful for some low-bandwidth cameras, retro animation and extreme file-size saving.

30

30 FPS

Common for television, casual video recording and a more cinematic-looking image.

60

60 FPS

The familiar smooth standard for gaming, sports broadcasts and standard-speed video.

120

120 FPS

High-fluidity motion for fast gaming and smooth 4× slow-motion playback from a 30 FPS timeline.

240

240 FPS

Ultra-high refresh and capture rates aimed at competitive gaming and smooth slow motion.

360

360 FPS

Specialist esports and high-speed capture use where motion clarity is critical.

480

480 FPS

High-speed scientific, industrial and cinematic capture for analyzing rapid events.

600

600 FPS

Specialized super-slow-motion capture for impacts, fluid dynamics and detailed analysis.

Remember: FPS is how many frames are rendered or captured each second. Hz is how many times a display refreshes each second. A smooth result needs the source, GPU, cable, software and display mode to work together.