Convert MP4 to WEBMRight in Your Browser
Convert MP4 videos to WEBM — the open, royalty-free format optimized for fast web playback and HTML5 video. Encoded locally on your device.
Drag & drop files here
or click to browse
Your files never leave your device
Select the output format and click Convert
1. Add your files
Drag & drop or click to browse. Multiple files supported.
2. Pick your settings
Choose the output format.
3. Download
Files convert on your device and download instantly.
Frequently Asked Questions
Why use WEBM for the web?
WEBM is open, royalty-free and widely supported by browsers for HTML5 video, often at a smaller size than MP4 — ideal for websites and web apps.
Is WEBM conversion slower?
WEBM uses the VP8/VP9 codec, which re-encodes the whole video, so it takes longer than a quick MP4 rewrap. For a faster result at similar quality, MP4 stays the better default.
Is it safe to convert MP4 videos online?
Yes. Unlike traditional online converters, this tool never uploads your files. The conversion runs entirely inside your browser using WebAssembly, so MP4 videos never leave your device — you can even disconnect from the internet after the page loads and it still works.
More Tools
A free, privacy-first online converter built by Softorino.
No sign-up. No ads. No data collection.
Supports the most common video and audio formats — MP4, MKV, MOV, WEBM, GIF, MP3, WAV, FLAC and more — with a focus on Apple-compatible outputs.
Softorino Converter is a free, fast, privacy-first video & audio converter that runs in-browser (no sign-up, no data collection).
Why It Exists
Most top search results for "how to convert [X to Y]" lead to sketchy, ad-heavy websites or tools that:
- —Upload your file to unknown servers
- —Limit free use or add watermarks
- —Track you or show spammy ads
Softorino Convert is trying to be the trusted alternative:
No tracking. No uploading. No BS.