Refresh Rate
Display diagnostics render directly in-browser, so you can inspect real monitor behavior without installing anything.
Refresh Rate Test: Browser Frame Timing, Hz Estimate, Motion Sampling, And Ongoing Test Indicator
Estimate display refresh rate and frame pacing through browser animation timing.
What this test checks
- Full-screen visual inspection
- Panel uniformity or color behavior
- Brightness and contrast visibility
- Review The Calculated Hz Result
How to read the result
Refresh Rate is primarily a visual inspection tool. Use full-screen mode, normal viewing distance, and a clean panel surface; persistent bands, tint shifts, glow, or missing pixels are more meaningful when they repeat across colors or brightness levels.
Start The Refresh Rate Measurement
The user starts a timed sampling window so the page can gather frame intervals. A visible progress indicator confirms that the refresh rate test is actively running.
Let The Browser Collect Frame Timing
The tool uses browser animation timing to estimate a cadence near 60Hz, 75Hz, 120Hz, 144Hz, 165Hz or another common refresh rate. It is not an independent measurement of the display panel.
Review The Calculated Hz Result
The result summarizes animation callback intervals and estimates browser frame cadence. It cannot verify the monitor's physical refresh rate or the capability of a display cable.
Retest After Changing Display Settings
You can rerun the checker after changing Windows, GPU or monitor settings. This helps show whether browser animation timing follows the expected Hz mode, without independently confirming the panel refresh rate.
Related I/O Checkup Tools
What does Refresh Rate measure?
Estimate display refresh rate and frame pacing through browser animation timing.
Do I need to install anything for Refresh Rate?
No. Refresh Rate runs directly in a modern browser. Some checks may ask for permission when they need camera, microphone, gamepad, pointer lock, touch, or audio output access.
Are results uploaded?
The test runs in your browser and uses local input events or browser hardware APIs for the visible diagnostics.
Why should I run related tests too?
Related tools help separate hardware issues from browser timing, display behavior, input device settings, or permission problems, which makes the final diagnosis more useful.
Detailed Testing Guide
Panel symptom
This display page turns the screen into a controlled inspection surface for a specific panel issue.
Start with a baseline run before changing device settings. Record any repeated symptom so the next comparison is useful.
Visual evidence
The useful evidence is visual: fixed pixels, glow patches, tone separation, color behavior, motion clarity, or gradient smoothness.
Watch Full-screen visual inspection, Panel uniformity or color behavior, Brightness and contrast visibility, Review The Calculated Hz Result. These observations come from the browser; they do not reveal hidden firmware or factory calibration data.
Viewing method
Use full screen, clean the panel, reduce reflections, and test at the brightness level you actually use.
Keep the test conditions stable. Changing browser, cable, port, lighting, surface, volume, grip, or selected device all at once makes the result harder to trust.
Result reading
Room light, viewing angle, HDR, color profiles, and browser chrome can make a normal panel look worse or hide a real issue.
A repeated pattern matters more than a single spike. When something looks wrong, confirm it with another pass and compare a related tool before deciding the device itself is defective.
Limits and next checks
Compare related display pages before deciding whether the symptom is pixels, backlight, contrast, color, refresh, motion, or banding.
For a closer comparison, try Dead Pixel Test, Backlight Bleed Test, Screen Uniformity Test, Refresh Rate Test. Keep the same device and connection while you investigate the next symptom.