Video Grayscale Converter
Convert videos to black and white / grayscale completely offline in your browser
No Upload
100% Private
Free
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Drop your MP4 files here
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Output Files
Why Use This Tool
Cinematic Look
Black and white gives videos a classic, dramatic, cinematic feel.
Smaller Files
Grayscale videos can compress slightly better than full-color.
100% Private
No upload required.
Frequently Asked Questions
Can I undo the grayscale conversion?
No. Grayscale conversion is destructive — color data is removed. Keep a backup of the original color video.
Are my files uploaded anywhere?
No. Processing is entirely client-side via FFmpeg.wasm — files never leave your browser.
How big can my files be?
Limited by your device's RAM. ~2GB on desktop, smaller on mobile. Browser memory is the constraint.