Free · no signup · runs in your browser
Drop in a photo shot against a green or blue screen to remove the green screen background, 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
See it before you upload anything
Slide the divider. Left of it is a frame shot against a green screen; right of it is the same frame after the screen colour was keyed out. The checkerboard is not painted on — it is where the background used to be.
Both frames are drawn illustrations made for this page, not a photograph of a real person. The right-hand one was produced by running this tool's own keying maths over the left-hand one.
Three steps, no account
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Guides
Short write-ups that answer the questions the tool cannot answer by itself — from why a cutout edge looks wrong, to what a tool's “free” claim is really promising. Three of them are below; the full list of ten is on the guides page.
Why the edge looks wrong
Hard, stair-stepped outlines and pale halos, what causes each one, and which slider actually fixes it.
Which format keeps transparency
What “transparent” means in a file, and why your transparent background turns white after export.
When a green screen cannot be keyed
Spilled green light, motion blur, and subjects that carry the screen’s own colour. Four failures and a 60-second check.
Reference
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.
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.
From video
A video is a sequence of still frames, and a key has to run on every one of them. That changes the question: it is no longer only whether the screen comes out, but whether it comes out the same way in frame one and frame two thousand. Background brightness drifts as the subject moves, motion blur smears the boundary, and a setting that looks perfect in the preview can flicker on playback.
The tool on this page works on one still at a time. The reliable workflow is therefore to export the hardest frame from your clip — the fastest movement, the closest subject, the least lit corner — tune the key on that frame here, note the tolerance and softness, and then apply the same numbers in the video editor that will process the clip. This guide covers which frame to pick, why a fixed threshold drifts, and what a stable edge looks like over time.
Guides
Eight entries, ordered the way people actually arrive: something looks wrong, or nothing will remove it.
Questions
Yes. No account, no watermark on your download, and no limit on how many images you process.
No. There is no login, no extension and no app. Open the page, drop a photo in, download the PNG.
Yes. Use the blue screen preset, or switch on the eyedropper and click the blue area of your photo. Any solid key colour works.
Yes. The transparent PNG is written at the same pixel dimensions as the image you loaded. Nothing is resized or downscaled on export.
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.
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.
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.
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.
Three settings do all the work. Key colour tells the tool which colour counts as background; it is sampled automatically from the edges of your photo, and you can override it with the eyedropper if that guess is off. Tolerance decides how far from that colour a pixel may be and still be deleted. Edge softness rebuilds the boundary so it is not stair-stepped, and spill removal takes the screen’s colour out of hair and shoulders. Then download: the export is a PNG whose background is genuinely empty, written at the pixel size you loaded. Nothing is uploaded at any point, because the whole calculation runs inside the page.
Removing a green screen is a colour decision: one specific colour is declared background, and every pixel close enough to it is deleted. That is why it is instant and needs no trained model — and also why it cannot work without a screen, because then there is nothing to key against. Removing an arbitrary background is a recognition problem instead: the tool has to work out what a person is before it can keep them. The two fail in completely different ways, and the honest split is that this page does the first one only.
No account, no upload, no watermark. The whole thing runs in the page you are already looking at.
Open the green screen remover