MP4 to WebM
Convert MP4 video to WebM format
How It Works
Select Your File
Upload, drag & drop, or paste directly from clipboard.
Configure Options
Set quality level and output format.
Download Result
Processed entirely in your browser. Download instantly.
About MP4 to WebM
Convert MP4 video files to WebM format entirely in your browser. WebM is an open-source video format developed by Google, optimized for web use. It is supported by all modern browsers and is the preferred format for HTML5 video, web applications, and platforms that favor open standards. The conversion uses VP8/VP9 encoding via FFmpeg for local processing –your videos are never uploaded to any server. WebM files are typically smaller than MP4 at equivalent quality, making them ideal for web delivery.
Frequently Asked Questions
Why use WebM instead of MP4?
WebM is open-source and royalty-free. Some platforms prefer it, and it often achieves smaller file sizes for web delivery.
Can all browsers play WebM?
Yes. Chrome, Firefox, Edge, and Opera support WebM natively. Safari added WebM support in version 14.1.
Will conversion take long?
WebM encoding is slower than MP4 (H.264) encoding. A 1-minute video typically takes 30-60 seconds to convert.