Is this tool free to use?

Yes, all our tools are 100% free to use with no registration required.

What file formats are supported?

We support all major image formats (JPG, PNG, GIF, WebP, BMP) and video formats (MP4, WebM, AVI, MOV).

Is there a file size limit?

Yes, the maximum file size is 200MB for optimal processing speed.

Video to WebM

Convert MP4, AVI, MOV to WebM format for web. Reduce file size while maintaining quality. HTML5-compatible video converter.

Drop files here or click to upload

Videos up to 200MB

Video to WebM

Video to MP4Video Converter Video to GIF Crop Resize Rotate Cut

Convert MP4, AVI, MOV to WebM format for web. Reduce file size while maintaining quality. HTML5-compatible video converter.

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Video Codec

Settings

Video Codec

Audio Codec

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Quality

Settings

Quality (CRF)Lower = better quality, larger file

ResolutionKeep original if not set

Frame Rate (FPS)FPS (frames per second)

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Bitrate

Settings

Video Codec BitrateOverrides quality setting

Audio Codec Bitratee.g., 128k, 192k

WebM with VP9 and Opus provides excellent compression for web streaming. CRF quality settings usually give better results than fixed bitrates.

Convert to WebM

Optimal format for web video

VP9

50% Smaller

Convert to WebM

Convert videos to WebM format for optimal web performance and compatibility. WebM with VP9 codec delivers exceptional compression efficiency, making it perfect for web developers and content creators.

Whether embedding videos in websites, creating web applications, or optimizing for mobile browsing, WebM provides the best balance of quality, size, and browser compatibility for modern web video delivery.

50%Smaller

VP9Codec

4KSupport

FreeLicense

WebM Features

WebM is designed specifically for the web, offering superior compression and quality for online video. With VP8/VP9 codecs, achieve 50% smaller files than MP4 while maintaining quality.

Leverage Google's VP9 codec for cutting-edge compression efficiency. Reduce bandwidth usage by up to 50% compared to H.264 while delivering the same visual quality.

WebM plays natively in Chrome, Firefox, Edge, and Opera without plugins. Hardware acceleration in modern browsers ensures smooth playback with minimal CPU usage.

WebM is completely open-source and royalty-free, eliminating licensing concerns. Use it commercially without fees or restrictions.

Frequently Asked Questions

WebM is natively supported in Chrome, Firefox, Edge, Opera, and most Chromium-based browsers. Safari requires macOS Big Sur or later for WebM support. For maximum compatibility, provide MP4 fallback. Mobile browsers on Android fully support WebM.

VP9 offers 50% better compression than VP8 and 30-50% better than H.264, making it ideal for modern web use. Use VP9 for new projects targeting current browsers. VP8 provides wider compatibility with older browsers.

WebM with VP9 typically produces files 30-50% smaller than MP4 with H.264 at the same quality. For 1080p video, expect 40% reduction; for 4K content, savings can reach 50%.

WebM is excellent for web backgrounds! Smaller file sizes mean faster page loads, VP9's efficiency allows high-quality backgrounds with minimal bandwidth, and native browser support ensures smooth playback.

Opus is the recommended audio codec for WebM - it provides superior quality at lower bitrates than AAC or MP3. Use 128 kbps Opus for excellent quality, or 64-96 kbps for good quality with smaller files.