Is Black & white video free? Is there a watermark?

Yes — Black & white video is free to use with no sign-up or watermark. Very large files can still be limited by your browser's available memory and processing resources.

Do my files get uploaded to a server?

No. Black & white video runs entirely in your browser with WebAssembly, so your MP4, MOV, WebM, MKV file never leaves your device and nothing is stored or seen by us.

What can I put in, and what do I get out?

Black & white video accepts MP4, MOV, WebM, MKV and gives you back a MP4 file. Actual codec support depends on what the bundled engine or browser decoder can read.

Does Black & white video change my original file?

No. It never touches your original — Black & white video creates a brand-new MP4 file to download and leaves the source on your device untouched.

Free tools · Edit

Black & white video

Convert a video to black and white (grayscale) for a classic, moody look. Browser-only — nothing is uploaded and there's no watermark.

Runs entirely in your browser. Your file is never uploaded — no watermark, no account.

Drop a file or click to chooseMP4, MOV, WebM, MKV

Get a better result

Best for: A monochrome treatment that keeps the original timing and framing while removing colour from the moving image.
Input → output: Video saturation is set to zero, then the monochrome picture becomes H.264/yuv420p MP4 while sound becomes 128 kbps AAC audio.
Quality tip: Check that the subject still separates from the background without colour cues. Use another editor if exposure or contrast needs adjustment.
Know before running: The filter does not adjust contrast, grain, tint, lighting, or selective colour. It applies one global treatment and performs a lossy video re-encode.
Next step: Fade in from black to add a restrained opening to the monochrome cut.

How to use Black & white video

1
Choose your file. Drop a supported MP4, MOV, WebM, MKV file into the tool, or click to select one. It stays on your device — nothing is uploaded.
2
Run locally. Press Run to begin. The first processing run loads the browser engine before local processing begins.
3
Download. Review the result, then download the finished file from your browser with no watermark.

Frequently asked questions

Is Black & white video free? Is there a watermark?: Yes — Black & white video is free to use with no sign-up or watermark. Very large files can still be limited by your browser's available memory and processing resources.
Do my files get uploaded to a server?: No. Black & white video runs entirely in your browser with WebAssembly, so your MP4, MOV, WebM, MKV file never leaves your device and nothing is stored or seen by us.
What can I put in, and what do I get out?: Black & white video accepts MP4, MOV, WebM, MKV and gives you back a MP4 file. Actual codec support depends on what the bundled engine or browser decoder can read.
Does Black & white video change my original file?: No. It never touches your original — Black & white video creates a brand-new MP4 file to download and leaves the source on your device untouched.