Convert videos to any format
Drag & drop video file here
Supports MP4, MKV, AVI, MOV, WebM and more
Drag & drop your AVI video
Automatic conversion with optimal settings
Save your converted WEBM file
Convert AVI to WebM for web publishing. WebM's VP9 codec delivers much better compression than AVI's legacy codecs.
AVI is a classic multimedia container format introduced by Microsoft in 1992. While considered legacy, it remains widely used for compatibility with older systems and simple video storage.
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.
AVI is large and legacy. WebM is small and web-optimized. A significant quality and size improvement for web use.
Common scenarios for this conversion
Convert AVI to WEBM when your device or app doesn't support the original format.
Upload WEBM instead of AVI for better support on YouTube, Instagram, and TikTok.
Convert to WEBM for seamless import into professional editing software.
Play AVI 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.