WEBM to MP4
Convert WEBM to MP4 for free, entirely in your browser. No uploads, no accounts, no file size limits.
Frequently asked questions
Is it safe to convert WEBM to MP4 here?
Yes — the conversion runs entirely in your browser using ffmpeg compiled to WebAssembly. Your file is never uploaded to a server.
What quality should I choose?
Higher quality settings produce larger files with more detail preserved; lower settings trade some quality for a smaller download.
Is there a file size limit?
No upload limit — since everything runs locally, very large files just take longer to process depending on your device.