Device checks
Check keys, buttons, screens and speaker channels locally.
Left and right speaker test
Tool: Device checksPlay separate left and right reference tones to check stereo speaker or headphone routing.
Mouse button and scroll tester
Tool: Device checksInspect mouse button presses, click intervals and wheel events inside a dedicated test area.
Screen colour and pixel test
Tool: Device checksDisplay solid colours and simple patterns to help inspect a screen for visible pixel defects.
UK keyboard tester
Tool: Device checksCheck which physical keys reach your browser on a labelled UK keyboard layout.
Left and right speaker test
Play separate left and right reference tones to check stereo speaker or headphone routing.
Mouse button and scroll tester
Inspect mouse button presses, click intervals and wheel events inside a dedicated test area.
Screen colour and pixel test
Display solid colours and simple patterns to help inspect a screen for visible pixel defects.
UK keyboard tester
Check which physical keys reach your browser on a labelled UK keyboard layout.