Convert MP4 to WEBM online, for free.
Convert MP4 videos to WebM format instantly in your browser. Our lightweight tool provides high-quality, privacy-focused conversion with no uploads required.
The WebM format is an open-source, royalty-free media format designed for the web. Unlike MP4, which may carry licensing restrictions, WebM is optimized for HTML5 video playback and delivers smaller file sizes without compromising on quality. If you're developing a website, creating a blog, or uploading videos for mobile-first users, WebM is the ideal format for seamless streaming and faster loading times.
Your MP4 files never leave your device. All video processing takes place in your browser using modern JavaScript and WebAssembly technology. This ensures full privacy and fast performance, especially for users working with sensitive or proprietary media. No data is uploaded, stored, or tracked—ever.
You can fine-tune your video output by selecting desired resolution, frame rate, or bitrate. Whether you need a compressed clip for social media or a high-definition video for professional purposes, our tool provides flexible options to match your workflow. The settings panel appears after you upload your MP4, so you stay in full control.
Thanks to in-browser acceleration, your MP4 files convert to WebM within seconds, with no lag or long queues. You can convert videos on mobile or desktop devices without requiring any software installations. Simply upload, convert, and download—it's that easy.
If you're creating online video content, WebM is a preferred format for embedding due to its compatibility and efficiency. Our converter helps developers, designers, educators, and marketers quickly produce WebM files suitable for all types of web platforms, LMS tools, and multimedia applications. Get the right format, every time, without relying on slow online services or bulky software.