Green Screen Remover

Drop in a photo shot against a green or blue screen, pick the key colour, and download a transparent PNG. Everything runs in your browser — your image is never uploaded.

Drag and drop an image, or click to choose a file

You can also paste an image from your clipboard with Ctrl / ⌘ + V

How it works

  1. Add your photo. Drag and drop, paste from the clipboard, or pick a file. The image stays on your device.
  2. Set the key. The key colour is sampled automatically from the edges of your photo. If that guess is off, or your screen is blue instead of green, click the eyedropper and then click the screen area in the image. Nudge tolerance, edge softness and spill removal until the cutout looks right.
  3. Download the PNG. You get a PNG with a real transparent background, written at the exact pixel size of the file you loaded.

Supported images

The picker takes any image type (image/*) and nothing else filters your file, because the page hands it straight to your browser's own image decoder. That decoder is the only real limit, and it varies by browser and operating system. This page was tested with JPEG and PNG; WebP, GIF, BMP, AVIF and HEIC depend on whether your browser can open them at all. If a file cannot be decoded you get a message instead of a broken preview, never a half-loaded canvas.

There is no fixed pixel limit built into the tool, but the work happens in your browser memory, so very large photographs take longer and can hit the limits of your device. A multi-megapixel photo is normally instant. Small images work too; the result keeps whatever size you gave it.

How the removal is calculated

Each pixel is turned into a luma value and two chroma values (Y, Cb, Cr). The tool then measures the chroma distance between the pixel and your key colour, ignoring brightness so uneven lighting across the screen does not matter.

Pixels closer to the key than the tolerance radius become fully transparent. Pixels further away than tolerance plus edge softness stay fully opaque. The band in between gets a straight alpha ramp from transparent to opaque, which is what keeps edges smooth instead of stair-stepped. Spill removal then caps the key channel where it climbs above the average of the other two, which is what removes the green fringe bouncing off the screen onto hair and shoulders.

Questions

Is this green screen remover free?
Yes. No account, no watermark on your download, and no limit on how many images you process.
Do I need to sign up or install anything?
No. There is no login, no extension and no app. Open the page, drop a photo in, download the PNG.
Can I remove a blue screen instead of a green one?
Yes. Use the blue screen preset, or switch on the eyedropper and click the blue area of your photo. Any solid key colour works.
Does it keep the original resolution?
Yes. The transparent PNG is written at the same pixel dimensions as the image you loaded. Nothing is resized or downscaled on export.
Is my photo uploaded to a server?
No. There is no server behind this page. The pixel work runs on a canvas inside your browser, so the file never leaves your device.
Can I remove a green screen from a video?
Not with this tool. This page takes still images and exports a PNG. Video would need frame-by-frame decoding and a transparent video format to export into, which a static browser page like this one does not do.
Why do green edges still show around hair or shoulders?
That is spill: green light bouncing off the screen onto your subject. Raise spill removal, and raise edge softness if the outline looks hard. If a green patch survives inside the subject, raise tolerance.
Does it work on a phone?
Yes. The layout is built for narrow screens, controls stay reachable, and you can pick a photo straight from your library. Large photos are slower on a phone because your device does the work.