Convert videos to any format
Drag & drop video file here
Supports MP4, MKV, AVI, MOV, WebM and more
Drag & drop your MP4 video
Automatic conversion with optimal settings
Save your converted WEBM file
WebM with VP9 offers better compression than H.264 MP4 for web embedding. If you're publishing video on a website, WebM delivers smaller files with comparable quality, reducing bandwidth costs and improving page load times.
MP4 is the most widely used video container format, supporting H.264, H.265/HEVC, and AV1 codecs. It offers excellent compatibility across all devices, browsers, and platforms while maintaining a good balance between file size and quality.
WebM
WebM is an open, royalty-free video format developed by Google, optimized for web use. It uses VP9 or AV1 for video and Opus for audio, offering efficient compression ideal for HTML5 video and web applications.
MP4 uses H.264/H.265 codecs and is universally compatible. WebM uses VP9 and is optimized for web playback with smaller file sizes. Choose MP4 for maximum compatibility, WebM for web-specific use.
Common scenarios for this conversion
Convert MP4 to WEBM when your device or app doesn't support the original format.
Upload WEBM instead of MP4 for better support on YouTube, Instagram, and TikTok.
Convert to WEBM for seamless import into professional editing software.
Play MP4 files on any phone by converting to WEBM.
Your files never leave your device. All conversion happens in your browser — no server uploads.
Hardware-accelerated conversion powered by WebCodecs and WebAssembly.
Convert between any video format combination.