Vertical Banding Test
Test your display for vertical banding — visible vertical lines or stripes on uniform backgrounds caused by panel defects.
How does this test work?
A vertical banding test displays smooth gradients and uniform colors. Vertical lines or stripes visible on these backgrounds indicate vertical banding, a panel manufacturing defect.
How to use the Vertical Banding Test
Open the Vertical Banding Test on any device with a modern browser — desktop, laptop, tablet, or phone. No downloads, plugins, or signup required. The tool loads instantly and works in Chrome, Firefox, Safari, Edge, and other Chromium-based browsers.
Follow the on-screen instructions to run the test. Results are displayed immediately in your browser. You can repeat the test as many times as needed. For the most accurate results, close other tabs and applications to reduce interference.
Privacy: This test runs entirely in your browser using standard web APIs. No data is collected, uploaded, or stored on any server. Camera, microphone, keyboard, mouse, and controller inputs are processed locally and never leave your device. DeviceKit does not use analytics cookies or tracking scripts.
Browser note: Some hardware values are estimated because browsers limit direct access to device hardware for security and privacy reasons. Results may vary slightly between browsers and operating systems. For the most reliable measurements, use an up-to-date version of Chrome or Edge on a desktop computer.
Frequently Asked Questions
What causes vertical banding?+
Vertical banding is caused by inconsistencies in the LCD panel's column drivers or manufacturing tolerances. It appears as faint vertical stripes on uniform backgrounds.
Related Tests
Gradient Banding Test
Test your monitor, TV, or phone for gradient banding and color stepping artifacts using smooth color gradients.
Screen Uniformity Test
Test your display for uniformity issues including clouding, dirty screen effect, tinting, and banding using gray and white test screens.
Dirty Screen Effect Test
Test your monitor or TV for dirty screen effect (DSE) — uneven patches visible on uniform gray or colored backgrounds.