BlankPane

What is BlankPane?

BlankPane is a simple browser tool for filling your screen with solid colors like white, black, green, blue, or any custom shade. You can use it instantly without installing anything, switch to full screen, and download high-quality PNGs in different sizes. It is handy for monitor testing, dead-pixel checks, lighting for photos or video calls, Zoom backgrounds, tracing, cleaning screens, or making a plain backdrop for design work. The whole tool runs in your browser, so nothing is uploaded or stored.

Key features

• Instantly fills the screen with any solid color.
• Offers preset sizes like Full HD, 4K, and A4.
• Lets you download color swatches as PNG files.
• Includes tools for dead-pixel, update, and signal tests.
• Works as lighting, backdrop, or Zoom background support.
• Runs entirely in the browser with no uploads.