Green screen remover without a watermark
A watermark on a keyed export is not a technical necessity — it is a pricing decision. This page is what that decision usually looks like, why a browser-side tool can skip it, and what you trade instead.
What "no watermark" means here
Every export this tool writes is the keyed canvas and nothing else. There is no logo burned into a corner, no semi-transparent mark across the frame, no forced downscale on the free path and no "made with" badge added to the file. The download button hands the browser a blob built from the same canvas you were just looking at, and the browser writes it to your disk.
That is not a promise on a pricing page; it is the shape of the code. The export path encodes the canvas and triggers a download — there is no drawing step in between where a mark could be added.
The file is also unencumbered in the ways that matter for reuse: a transparent PNG, a ZIP of PNG frames, or a transparent WebM, all at your source resolution. Nothing in the file records that it came from here.
Why so many tools put one there
Most online green screen removers render on a server. That has a real cost per file: a machine decodes your clip, keys it, encodes it again and stores the result long enough for you to fetch it. Anybody offering that for free has to recover the cost somewhere, and the two usual answers are a watermark on the free tier or a hard cap that pushes you into a plan.
A watermark does two jobs at once. It withholds the usable version of the file, and it advertises the tool wherever that file ends up. For a service that pays for render time, it is a rational choice — not a trick, just the trade they picked.
There are two other reasons you will see marks that have nothing to do with price: stock-footage previews that are watermarked because you have not licensed the clip yet, and tools whose licence requires attribution. Neither is something a keying tool can or should strip.
Why this one can skip it
The keying happens in your tab, on your CPU. There is no render queue, no storage and no per-file bill, so there is nothing a watermark would be protecting the margin on. The no-upload page covers what keeping it local also avoids: no upload, no account, no retention window, no terms that let a service reuse what you dropped in.
The site is sustained by one disclosed affiliate link, noted in the footer of every page. That is the whole model. No subscription unlocks a cleaner export, because there is no dirtier one to unlock.
No watermark does not mean no limits
Skipping the watermark does not make the tool unlimited. The honest limits are about your machine, not your plan:
- A PNG sequence is assembled in memory before it is zipped, so it stops at 1200 frames. The page refuses and tells you the frame rate that would fit rather than writing a short file.
- The transparent WebM is a real-time capture at up to 30 fps, encoded at about 8 Mbps. It is not a frame-accurate transcode and it carries no audio.
- Everything runs at your source resolution — which means a long 4K clip is slow here, because your machine is doing all of it.
The difference is that these are physics and memory, not a paywall. They do not change if you come back tomorrow or sign in. The export settings page lists them in full.
What you are actually paying with
You pay in features rather than money. There is no manual brush, no rotoscope, no tracking mask and no batch queue. Colour is the only lever this key has, and the page says so instead of showing you buttons that do nothing. If your shot needs hand work, no free-tier watermark removal will save it — you need an editor.
You also pay with your own hardware. A three-minute 4K clip is slower here than on someone else's render farm, and if the machine cannot keep up, the WebM capture drops frames. The PNG sequence vs WebM page covers the export that is not time-bound.
Does "free" mean the key is worse?
No, and this is measurable. On the flat-green fixture in the reference set, the shipped default produces an intersection-over-union of 1.000000 — 55,459 subject pixels kept, zero background pixels left, zero subject pixels lost. Nothing is being held back for a paid tier, because the whole keyer is already in the page.
What does cost you quality is the shot, not the tier. On the same fixture with a shadow falling across the screen, the default drops to 0.617718, and raising tolerance to 40 brings it back to 1.000000. Those are synthetic fixtures, not real footage — read them as the shape of the problem, not as a score your clip will get.
How to check any tool before you trust it
- Export the shortest possible clip first. Most watermarks are applied on the free path regardless of length, so a two-second test tells you the truth.
- Read the pricing page, not the headline. "Free" usually means free to process; the download is the part that is metered.
- Try it offline. Load the page, disconnect, and key a file. If it still works, no server was involved — and a server is where watermarking happens.
- Check the file, not the preview. Some tools show a clean preview and stamp the download.
When this does not work
- The watermark is already burned into footage you were given. A chroma key subtracts a colour; it cannot reconstruct what a logo covers. You need inpainting or the unbranded source.
- You need someone else's render farm. A long 4K clip on an old laptop is slow here. Local processing is the feature and the ceiling.
- Your clip is longer than the sequence ceiling. Past 1200 frames the PNG export is refused; lower the frame rate or cut the clip.
- You want MP4. The MP4 profiles that play everywhere carry no alpha, so there is nothing to composite yet.
- You want the audio in the exported video. The WebM has no audio track. Keep the original and mux it back.
- You want batch processing. One file at a time, in the tab.
- The mark is on a stock preview you have not licensed. That is a licensing thing, not a pixel problem.
- You need hand-worked edges. There is no brush here.
Key it locally, keep the file clean
Open the tool, drop in a clip or a photo, and download a transparent PNG, a PNG sequence or a transparent WebM — no upload, no account, no mark on the result. The video page walks through the keying controls, and the transparent WebM page explains which players keep the alpha you just exported. The fixtures and measurements behind the numbers on this site live in the reference repository, with the write-up archived at doi.org/10.5281/zenodo.22916767.