Diagram: shoot on green, the color goes transparent, then drop the subject on any background — Shoot on green, turn that color transparent, then place the subject on any background.

About Greenscreencut

What it is

Greenscreencut is a free online green screen remover (chroma key tool). It lets you take the green or blue background out of an image or video and export a transparent result — all without installing anything.

Diagram: chroma key isolates the key color, builds a matte, removes the color, composites onto a new background — Chroma key: isolate the key color, build a matte, remove the color, composite onto a new background.

What it does

Removes green or blue screen from images and videos right in your browser.
Exports a transparent PNG, a transparent WebM, or a PNG-sequence zip.
Lets you fine-tune the result with a key-color picker, similarity threshold, edge smoothing, and edge shrink controls.

Diagram: the four controls — key color, similarity threshold, edge shrink, edge smoothing — and what each does — The four knobs: key color, similarity threshold, edge shrink (eats the fringe), edge smoothing (softens the matte).

Why it's built this way

Everything runs on your own device. Your files are never uploaded to a server, there is no account to create, and you can use it as many times as you like. It's a small, focused tool that respects your privacy by keeping your media on your machine.

Diagram: image exports as transparent PNG, video as transparent WebM or PNG sequence, both on-device — Image becomes a transparent PNG; video becomes a transparent WebM or PNG-sequence zip — neither is uploaded.

Who made it

Greenscreencut is built and maintained by the Greenscreencut project — an independent developer focused on free, private, browser-based media tools. There is no venture capital and no account system behind it; it is one small tool kept running so anyone can key out a background without uploading a file.

Diagram: green halo fix is raise edge shrink; chewed hair fix is lower shrink and raise smoothing — Green halo left? raise Edge shrink. Fine hair chewed away? lower shrink and raise Edge smoothing.