Does conversion reduce quality?

Conversion re-encodes the video with high-quality defaults, so differences are hard to notice. Pick "High quality" for even better results.

Are my files uploaded to a server?

No. Everything runs locally in your browser via WebAssembly. Files never leave your computer and are discarded when you close the page.

No. The site is completely free, requires no account, has no usage limits and adds no watermarks.

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Convert videos of any format to universal MP4 (H.264/AAC) or web-friendly WebM. Fixes playback problems on phones, players and websites.

Free · No sign-up · Runs in your browserLast updated: 2026-10-29

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Does conversion reduce quality?: Conversion re-encodes the video with high-quality defaults, so differences are hard to notice. Pick "High quality" for even better results.
Are my files uploaded to a server?: No. Everything runs locally in your browser via WebAssembly. Files never leave your computer and are discarded when you close the page.
Do I need to sign up or pay?: No. The site is completely free, requires no account, has no usage limits and adds no watermarks.