A green screen turns your display into a solid, vivid green field in one click. This free online green screen is handy as a small chroma key background, for testing the green subpixels on your monitor, for a calm, eye-friendly ambiance, or as a color reference for creative work. Make it fullscreen for an even green wash, and tune the shade and brightness to fit your setup.
What is a green screen?
A green screen is a full-screen display lit only by the green subpixels, producing a single pure green. Green is the color cameras separate most cleanly, which is why it is the classic chroma key background for compositing. Because the eye is most sensitive to green, a green field is also excellent for spotting subpixel faults and is often considered the most restful solid color to look at for longer stretches.
What people use a green screen for
Small chroma key background
Use a phone or tablet as a compact green screen behind small objects for chroma keying and background replacement in video and photo edits.
Test the green subpixel
A solid green field makes dead or stuck green subpixels easy to see and helps you judge green purity and uniformity on a new panel.
Relaxing, eye-friendly ambiance
Green is gentle on the eyes, so a dim green screen makes a calming background light for breaks, reading, or a soft room glow.
Color reference for creators
A pure green field gives a quick reference for color work, prop lighting, or checking how a camera renders saturated green.
How to use the Green screen
Open the page
The Green screen loads instantly in any browser — no app, sign-up, or download needed.
Go fullscreen
Click anywhere on the green area or press the F key to fill your whole display with green.
Adjust it
Fine-tune brightness and warmth, or switch to another color from the bar below the screen.
Exit or save
Press Esc to leave fullscreen at any time, or use Download to save the green screen as an image.
Green screen tool features
Adjustable brightness
Slide brightness from 10% to 100% to dim the green screen for night use or push it to maximum for cleaning and testing.
Warm & cool tint
Shift the green light from cool to warm to match your room, reduce evening eye strain, or flatter your face on camera.
OLED burn-in guard
An optional mode nudges brightness slightly every few seconds, protecting OLED and AMOLED panels during long sessions.
Keep-awake mode
Uses the browser Wake Lock so your display never dims or sleeps during calls, cleaning, or photography.
Download up to 8K
Export the exact color as a crisp PNG from 480p all the way to 8K (7680×4320) for wallpapers, editing, or offline use.
Pixel grid & custom HEX
Overlay a fine grid to pinpoint faulty pixels, or type any HEX code to display a precise custom color.
Green screen FAQ
Can I use this as a real green screen for video?
For small subjects, yes — put objects in front of a bright, evenly lit device and key out the green in editing. For full-body shots, a physical green backdrop still works best.
Why is green used for chroma key instead of other colors?
Camera sensors capture the most detail in green, and green rarely matches skin tones, so it separates cleanly from a subject and needs less light than blue.
Is green really easier on the eyes?
The eye is most sensitive to green wavelengths, and many people find a moderate green field comfortable to view for longer than red or blue.
Is the green screen free to use?
Yes. It is completely free with no ads, no account, and no limits. Open the page and start using the green screen right away.
Does it work on phones and tablets?
Yes. The green screen runs in any modern mobile or desktop browser — iPhone, Android, iPad, laptops and desktops — with no app to install.
How do I enter and exit fullscreen?
Click the screen or press F to go fullscreen. Press Esc (or F again) to exit. On mobile, tap once to expand and swipe or tap to return.
Will a green screen hurt my eyes?
It is a steady light source, no harsher than any bright web page. Lower the brightness for comfort and follow the 20-20-20 rule on long sessions.
Is it safe for OLED displays?
Yes, especially with OLED protection turned on. For long use, keep brightness moderate (60–80%) so static color does not risk burn-in.
Can I download the green screen as an image?
Yes. Open Download, pick a resolution up to 8K, and save a lossless PNG of the green color for wallpapers, video editing, or graphic design.
When to use a green screen
Pick a green screen for chroma key work, green-channel pixel testing, or a restful background glow. For serious video keying, light the screen evenly and keep your subject well separated from it; for a complete subpixel test, alternate green with red and blue, and use white for bright neutral light.
Why people trust this tool
This green screen is a lightweight, browser-based utility built for one job: giving you a clean, full-coverage color surface the moment you need it. There are no trackers, no accounts, and nothing is uploaded — every setting stays on your device. We keep fullscreen behavior stable across browsers, test mobile fallbacks, and update the controls when displays and browsers change, so the tool stays reliable whether you are checking a new monitor or lighting a video call.