KIOHWKIO HARDWARE TEST
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      Hardware tests39
      Input devicesKeyboard testMouse testGamepad testStylus and pen testPS5, PS4 and Switch controller testDouble click testScroll wheel test
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      Media tools25
      ImagesHEIC to JPGCompress imageResize imageImage converterEXIF viewer and removerRemove backgroundQR code generatorQR code scannerCrop and rotate imageWatermark imagesImage to text (OCR)
      Audio and videoVideo to MP3Compress videoTrim videoScreen recorderWebcam recorderVoice recorderVideo to GIFVideo converterRotate and crop videoMerge videosAudio cutterAudio converterNormalize audio
      FilesFile hash checker

      Refresh rate test

      Runs locally

      The browser draws in sync with your display. This page measures that rhythm for you.

      Photosensitivity warning: this test uses flashing light and fast-changing images, and may play sounds. If you have epilepsy or are sensitive to flashing light, do not use it.

      Refresh rate
      —Hz
       
      Frame time
      —ms
      Min / Max
      —
      Jitter
      —ms
      Dropped frames
      0
      Frame time history

      Results settle after a few seconds. Keep this tab in the foreground.

      Motion test

      How to use

      1. Keep this tab visible and wait a few seconds for the reading to settle.
      2. Compare the measured value with the refresh rate set in your OS display settings.
      3. Watch the moving blocks. Trails mean slow pixel response; jumps mean dropped frames.

      Frequently asked questions

      It shows 60 Hz but my monitor is 144 Hz.

      Check the refresh rate in your OS display settings, use DisplayPort or a capable HDMI cable, and make sure battery saver is not limiting the browser.

      Why does the value move slightly?

      Timers in browsers are not perfectly precise. The median over the last few seconds is the value to trust.