WebM is a file format. Use WEBM.to to convert WebM files to and from various other formats.

Is WebM conversion free?

Yes, our WebM converter is completely free for basic use.

WebM convertisseur

convertir WebM to and from various formats

Convert your WebM files quickly and easily with our free online converter.

About WebM

WebM est un format de fichier multimédia ouvert conçu pour le Web. Il peut contenir de la vidéo, de l’audio et des sous-titres et est largement utilisé pour le streaming en ligne.

Common Uses

Sharing and distributing WebM files
Converting between different formats
Professional and personal use

WebM FAQ sur les conversions

What is a WebM file?

WebM is an open, royalty-free video format designed for the web. Developed by Google, WebM uses VP8/VP9 video codecs and Vorbis/Opus audio codecs. It provides high-quality video at smaller file sizes, making it perfect for HTML5 video streaming and web content.

How do I convert WebM files?

Upload your video file using our simple drag-and-drop interface. Choose WebM as output or select another format to convert from WebM. Adjust quality settings if needed, then click Convert. Your video will be processed and ready for download.

Is the video conversion free?

Yes, our WebM converter is free for basic use. Convert videos without registration. Premium features are available for longer videos, batch conversion, and higher quality encoding options.

Which browsers support WebM?

WebM is supported by all modern browsers including Chrome, Firefox, Edge, and Opera. Safari added WebM support in version 14.1 (2021). For older browsers or devices, consider converting to MP4 for universal compatibility.

What's the difference between WebM and MP4?

WebM is open-source and royalty-free, while MP4 uses patented H.264/H.265 codecs. WebM typically offers better compression for web streaming, while MP4 has broader device compatibility. WebM is ideal for websites, MP4 for general video sharing and playback.

What quality settings should I use for WebM?

For web streaming, a bitrate of 1-4 Mbps works well for 720p content. For 1080p, use 4-8 Mbps. VP9 codec offers better quality at lower bitrates than VP8. Our converter automatically suggests optimal settings based on your source video resolution.

What audio formats work with WebM?

WebM supports Vorbis and Opus audio codecs. Opus is recommended for its superior quality and efficiency. Our converter automatically handles audio encoding, ensuring your WebM videos have properly encoded audio tracks that play in all supporting browsers.

Can I convert GIFs to WebM?

Yes! Converting GIFs to WebM is highly recommended. WebM files are typically 90% smaller than equivalent GIFs while offering better quality and smoother animation. This makes page loads faster and improves user experience on your website.

How do I use WebM in HTML5 video?

Simply use the HTML5 video tag with your WebM file as a source. For maximum compatibility, provide both WebM and MP4 versions, and the browser will choose the best supported format. WebM is the preferred format for web developers due to its quality and open licensing.

What's the maximum file size for conversion?

Free users can convert videos up to 500MB. This is enough for most web videos and short clips. Premium users have access to larger file limits for full-length videos. Longer videos may take more time to process depending on resolution and settings.