Video format · .webm
WebM is the open video format for the web: efficient VP8/VP9 compression, royalty-free licensing, and — uniquely — an alpha channel for transparent video overlays. It is the right choice for <video> embeds, transparent motion graphics, and royalty-conscious pipelines.
Every tool runs in your browser — files never leave your device. Badges say exactly what each tool does with WebM.
For web embeds where size and openness matter, and whenever you need transparent video overlays. For sharing, editing, or social uploads, MP4 remains the safer choice.
Yes — the video converter transcodes WebM to MP4 locally via FFmpeg, which fixes nearly all compatibility complaints in one step.
Yes, VP9 WebM can carry an alpha channel — the main reason motion designers pick it over MP4 for web overlays.
Completely. Transcoding runs in your browser with local FFmpeg; no video is uploaded.