Monitor Refresh Rate Tester

Browser-based tester for quick device or display checks before you move into deeper OS or hardware troubleshooting.

Display Performance Check

Expected vs measured refresh diagnostics

Use this to confirm monitor Hz settings and watch stability over time.

Advanced Options
Troubleshoot If Low
Check OS refresh setting, cable/adapter limits, mirrored-display mode, power-saving mode, and browser throttling.
Measured Refresh
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Measured FPS
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Stability
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Frame Jitter
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Expected Match
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0%
Ready. Click Start Measurement.
Note: Initial readings are shown after a minimum sample window to reduce noisy results.

Low-level programming is good for the programmer’s soul.

John Carmack

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