BlankPane

BlankPane is a free browser-based fullscreen color tool that fills your entire screen edge-to-edge with a solid color and lets you download that color as a high-resolution PNG.

What is BlankPane?

BlankPane is a free web-based utility for displaying fullscreen colors on any device with a modern browser. You pick a color (white, black, green, blue, pink, red, yellow, gray, purple, orange, or a custom hex value), and the page instantly fills your entire screen with that color. You can also export the color as a lossless PNG at preset sizes (Full HD 1920×1080, 4K UHD 3840×2160, Square 1080×1080, Story/Reels 1080×1920, A4 Print 300dpi 2480×3508) or at any custom pixel dimension. The tool runs entirely in your browser — nothing is uploaded, and no account is required.

Key Features

• Fullscreen color display — Instantly fills the browser viewport edge-to-edge with your chosen color; tap or press F to go full screen, Esc to exit.
• Solid color screens — One-click pages for white, black, green, blue, red, pink, yellow, gray, purple, orange, and a Zoom background screen, plus custom hex colors.
• PNG download — Exports the current color as a high-quality lossless PNG at preset sizes or custom width/height in pixels.
• Screen tools suite — Includes a Zoom Light Screen with adjustable color temperature, a Ring Light Screen around the webcam, a Screen Flashlight for max brightness, a Broken Screen Dummy with spiderweb/shatter overlays, Fake Update Screen for Windows/macOS/Linux, and a No Signal TV static effect.
• Utility tools — Dead-pixel test, Screen Cleaner, and other browser-based utilities accessible from the toolbar.
• Device support — Works on desktop, tablet, and phone browsers, including iOS Safari with fullscreen prompt support.
• OLED Saver mode — An on-screen toggle that dims the display and optionally turns off pixels on OLED/AMOLED screens to save battery.

Who is it for?

• Streamers and video-call users: Use a solid green or blue screen for chroma-key testing, or a white/colored screen as a free virtual background substitute or fill light.
• Photographers and creators: Download white (or any color) backgrounds at 4K resolution for product photos, flat-lays, and design mockups.
• Everyday users: Use a white screen as a reading light, tracing lightbox for paper, makeup/selfie light, or to find physical smudges while cleaning.

What can you do with BlankPane?

• Trace drawings on paper: Max-brightness white full screen acts as a lightbox — lay a sheet over the screen and trace line art without buying a tracing table.
• Clean your monitor correctly: A pure white fill reveals dust, oil marks, and smudges, so you know exactly where to wipe and can verify the panel is clean.
• Prank a coworker: The Broken Screen Dummy and Fake Update Screen tools create convincing cracked-glass or OS-update overlays that look real.
• Create a quick flashlight: The Screen Flashlight turns your display into a max-brightness white light for finding things in a dark room.

How does BlankPane work?

It's a static web page with no backend. When you select a color, JavaScript sets the document body's background to that color and optionally expands to fullscreen via the Fullscreen API. Downloading a PNG renders a canvas at your chosen pixel dimensions and triggers a browser download — so the exported image matches exactly the size you specify, up to the limits of your device memory.

FAQ

Is BlankPane free?

Yes, all color screens and tools are free to use in the browser. No sign-up, no uploads, no subscription.

Can I download a color as an image?

Yes. Choose a color, pick a size preset or type a custom width and height in pixels, then press Download PNG. The file is generated locally in your browser and nothing is sent to a server.

Will it work on my phone?

Yes — it works on any modern phone, tablet, or desktop browser. On iPhone Safari, allow full screen when prompted for the smoothest edge-to-edge result.