CHROMA KEY

Free Green Screen Remover

Key a real green screen in your browser, with the tolerance, feather and despill controls that decide whether an edge reads clean. Every frame is processed on our GPU servers.

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  • ✓ Try without signup
  • ✓ No watermark
  • ✓ GPU-powered

Drop a video, or choose a file

Your file is uploaded securely to our servers for processing.

 Choose a file MP4, WebM or MOV · up to 5 minutes
Full editor ↗
The same cyclist with the background removed, on a transparency checkerboard A cyclist riding along a rocky coastline at sunset The same person with the room removed, standing on a transparency checkerboard A person recorded in a cluttered room, with a window, a bookshelf and a floor lamp behind them
Original Background removed

Drag to compare: the original on the left, the background removed on the right, shown against a transparency checkerboard.

Background

5

Key controls

No signup

To try it

5min

Longest video

MP4

Video export

GPU

Where it runs

What a Green Screen Remover Does

A green screen remover separates a subject from a single-coloured backdrop and replaces it with a scene, a fill, or nothing. It compares each pixel against a nominated colour and builds a matte of foreground, background and partial pixels.

A chroma key works per pixel and per frame, so it never guesses at a person's shape. Five controls set precision; most tools hide them behind one slider.

ControlDoesGet it wrong
Key colourSampled near the subjectCorner shades mislead
ToleranceAllowed drift from the key colourLow leaves patches, high eats hair
Softness (feather)Width of the transition bandHard mattes show on hair
Edge blurBlurs the matte, not the imageStair-stepping survives
DespillRemoves bounced green lightA green rim survives

Browser keying often omits despill. How the matte is computed covers compositing.

Remove a Green Screen From Video

  1. Drag and drop

    MP4, MOV or WebM, up to 5 minutes. It uploads in segments, so processing starts straight away.

  2. Sample, then tune

    Key colour near the subject, tolerance only as high as needed, a pixel of feather so hair does not read as cut paper, then despill. The preview is live.

  3. Replace the background

    A photo scene, a solid background color, a gradient, a blur, or clean chroma green. MP4 out (WebM in some browsers).

Key a clip with no accountFree to try, no signup.
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What Causes a Bad Key

  • Wrinkled backdropFolds are a different shade; tolerance that covers them eats the subject. Steam it.
  • Uneven lightingThe matte is decided on set. The key clears one side, not the other; light it separately, two lights at 45 degrees.
  • Subject too closeThe green rim on hair is spill. Move two to three metres forward, then despill.
  • CompressionBlocky edges and green speckle, worst on 8-bit 4:2:0 phone footage. Shoot high bitrate; never re-encode.
  • Green wardrobeHoles through a shirt or logo. No software tells green cloth from a green wall, so shoot blue.
No green screen in the shotThe same tool keys an ordinary room with AI.
Remove a background without a green screen

Chroma Key or AI Segmentation

An AI segmentation model separates subject from background by recognising the subject rather than matching colour, so it replaces the green screen requirement.

Segmentation wins with no green screen at all, or a wrinkled, badly lit or too-close one. Our AI model runs on GPU servers and is built for people, so it expects one in frame.

  • Fine hairAI segmentation is softer than a well-lit key.
  • GlassesThin shapes hold better under a chroma key.
  • Motion blurA colour key answers the same every frame; edges hold.

The trade: no backdrop needed, softer on hair. It rarely shows in vertical frames — see the short-form video workflow.

In and Out

MP4, MOV, WebMGIF input
Key or AION OUR GPUS
MP4 / WebM outAlpha — not yet

Frequently Asked Questions

Do You Need a Green Screen for Chroma Key?

A chroma key needs a backdrop of one evenly lit colour; green is the most common choice. Blue keys the same way and suits subjects wearing green. Without one, use AI segmentation.

How Do I Remove a Green Screen From Video Online?

Drop the clip in, sample the key colour near the subject, raise tolerance until the green clears, then feather the edge and despill the rim light. Export is MP4, or WebM in browsers that cannot write MP4.

Is This Green Screen Remover Free?

Yes — no account, no daily cap, and the export is free. No resolution tier gates it either, because it is produced on your machine. Competitors gate full-resolution export.

What if My Green Screen Has Wrinkles or Uneven Lighting?

Wrinkles and uneven lighting create several shades of green, so no single tolerance clears them without eating the subject. AI segmentation ignores backdrop colour: a badly lit screen is worse than none.

When Should I Use Chroma Key Instead of Automatic Removal?

Use the chroma key when the backdrop is evenly lit and one colour, when the subject is not a person, or when fine hair, glasses and motion blur must hold accurately.

Can I Get a Transparent Background From Green Screen Footage?

Not from this tool today. The export is MP4 or WebM with a replacement background or clean green screen composited in, not an alpha channel. Key it in Premiere Pro or After Effects.

What Video Formats Can I Put in and Get Out?

Input is anything the browser can decode: MP4, MOV and WebM. Output is MP4, or WebM in browsers that cannot write MP4. Convert to MOV for QuickTime pipelines.

Does the Green Screen Remover Work on Mobile?

Yes, in a recent mobile browser. The segmentation runs on our GPU servers, but your phone prepares the upload and builds the export, so a long clip is slower on a phone.

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