Convert to MP4
Convert video files to MP4 — free, private, runs entirely in your browser.
Convert any video to MP4 instantly — free, private, and entirely in your browser. No files are uploaded to any server. No sign-up, no watermarks, no file size limits.
Settings
No data transfer — all data stays on your device!
About the MP4 Format
MP4 (MPEG-4 Part 14) is the most widely used video container format. It supports H.264/AVC video with AAC audio, delivering excellent quality at small file sizes. MP4 is universally supported across all devices, browsers, and media players — making it the default choice for sharing and streaming video.
Features
Near-Zero CO₂
Server-based converters upload your file, process it remotely, and send it back — consuming network and data-centre energy on every request. WebConverter runs entirely on your device, so the only energy used is your local CPU. No data transfer, no server electricity.
Install for Offline Use
WebConverter works offline as a Progressive Web App. Click "Add to Home Screen" on mobile or the install button in your browser's address bar. Once installed, you can convert files without any internet connection.
