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

Yes — Black & white video is completely free, with no sign-up, no watermark, and no limit on how many files you process.

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.

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

How to use Black & white video

1
Choose your file. Drop a file into the tool, or click to select one. It stays on your device — nothing is uploaded.
2
Pick your settings. Adjust the options if you like, then press Run. The first run downloads a ~32 MB engine once; after that it's instant.
3
Download. Everything is processed right in your browser — download the finished file instantly, with no watermark.

Frequently asked questions

Is Black & white video free? Is there a watermark?: Yes — Black & white video is completely free, with no sign-up, no watermark, and no limit on how many files you process.
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.
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.