Display Tests
Inspect refresh rate, pixels, resolution, color behavior, contrast ramps and digital color values using screen-focused tools.
Refresh Rate Test
Estimate display refresh rate from animation frame timing with a moving visual track.
Dead Pixel Test
Switch fullscreen solid colors to inspect dead pixels, stuck pixels and uniformity issues.
Screen Resolution Test
View screen size, available size, viewport, pixel ratio, orientation and color depth.
Screen Color Test
Inspect monitor color behavior with solid colors, gradients, contrast ramps and banding patterns.
Color Test
Preview RGB, HEX and HSL values, complementary colors and foreground/background contrast.
What these display tests cover
Display diagnostics combine browser-reported screen information with visual inspection patterns. They can help reveal obvious pixel, refresh, scaling and color issues without installing desktop software.
When to use these tests
Use them after changing monitor settings, connecting a new display, troubleshooting scaling, checking a used monitor, or confirming the browser-observed refresh rate.
Tips for more consistent results
Move the browser to the display you actually want to test, use fullscreen for pixel/color checks, and disable power-saving or remote-desktop modes when measuring refresh rate.
Explore the complete diagnostic suite
Each test page links to closely related checks so you can follow a symptom across input, browser, display or network layers. You can also open the complete tool index to search all Devices Test Hub utilities.