For a chroma key backdrop, turn the room lights up and keep shiny things away from the screen. Use Your colour if your video app wants a different green.
About the Green Screen
This page is a plain green screen. Press Full screen and your whole display turns bright green — no buttons, no text, nothing else.
A green screen is a small chroma key backdrop. Put a toy, a phone, a drink or a small product in front of it, and a video or photo app can swap the green for any background. It is also a green pixel test for your screen, and a simple green light.
It runs in your browser. Nothing is installed and nothing is sent anywhere.
Features
- Opens green — the page is already pure green (#00FF00), one click for full screen
- Any green — use Your colour to pick the exact shade your app keys best
- True full screen — no menus or text on top of the colour
- Brightness slider — make the green darker if it glows too much on the object
- Keep the screen on — the screen does not lock in the middle of a shot
- Other colours — blue for a blue screen key, plus white, black, red, yellow and pink
Using a monitor as a green screen
A screen gives off its own light, so the green is even — no folds or shadows like on a cloth. That makes it good for small things:
- Product photos — jewellery, toys, food, a phone case
- Stop-motion and small video scenes — figures and models in front of a big monitor or TV
- Testing your keyer — check your app's chroma key settings before you set up a big screen
For a person, a monitor is usually too small — use a green cloth or a pull-up green screen.
Tips for a clean key
- Keep the object a little away from the screen, so the green light does not spill onto its edges.
- Turn the brightness slider down a bit if the object gets a green glow.
- Avoid green and shiny objects — they disappear or reflect the screen.
- Light the object from the front with a lamp; the screen lights the background on its own.
- If your app keys blue better, tap Blue for a blue screen.
How to use it
- Press Full screen — the whole display turns green
- Put your object in front of the screen and film or take the photo
- Move the mouse or tap to see the Exit button again
- Tap a colour below the screen to change the colour, or press ← → in full screen
- Press Esc or double-click to leave full screen
Frequently asked questions
Can I use my monitor or TV as a green screen?
Yes, for small things: products, toys, models and stop-motion scenes. The light from the screen makes the green very even. For a person you need a bigger green cloth.
What colour is chroma key green?
There is no single standard. Pure screen green (#00FF00) keys well in most apps. Some people use a slightly darker green such as #00B140. Use Your colour to try both and keep the one your app removes most cleanly.
Green screen or blue screen?
Green is the usual choice: cameras pick up green with the most detail. Use blue when the object is green, or when your app keys blue better. Tap Blue below the screen to switch.
Can a green screen find dead pixels?
A green screen shows a failed green sub-pixel as a dark dot. To check every kind of fault, also look at white, black, red and blue. The Screen Test steps through them all.
Is it free?
Yes. It is free, with no sign-up and no download.
Related tools
- Blue Screen — a plain blue screen, for a blue chroma key
- Remove Background — cut the background out of a photo
- Blur Background — soft background, sharp subject
- Screen Test — every test colour in a row, to find dead and stuck pixels
- White Screen — a plain white light and a white backdrop
