Turn your WebM videos into MP4, right in your browser — no upload, no signup.
WebM to MP4 Converter turns a .webm file — often downloaded from a website or screen-recording tool — into MP4, the format that plays on virtually every phone, editor and platform. If a WebM clip won't open in your video editor, won't attach to a message, or won't play on a device that only understands MP4, this fixes it. Add your WebM files, click convert, and download an .mp4 that just works — everything happens right here in your browser, so your footage is never sent to a server.
Drag and drop your .webm files, or click to browse. You can add several at once.
Click Convert and a progress bar shows you how it's going. This one always needs a full re-encode, so it can take a few minutes for a longer clip.
Save each .mp4 file individually, or download every converted file at once as a .zip.
Your videos are processed locally and never leave your device.
Works straight in your browser — no software, no account, no email.
MP4 is the one format that's safe to assume any phone, app or editor will open.
Convert as many videos as you like, with no limits or hidden fees.
Turn your MP4 videos into WebM, right in your browser — no upload, no signup.
Change your video's format in seconds, right in your browser — no upload, no signup.
Shrink WebM videos in seconds, right in your browser — no upload, no signup.
Shrink MP4 videos in seconds, right in your browser — no upload, no signup.