Runs 100% in your browser
Your data never leaves your device. zero uploads.
Convert WebM files into MP4 with local processing and a downloadable result.
Initializing...
Use this focused converter when an application does not accept your WebM recording. Start with a manageable file and monitor the operation rather than closing the tab. Review the output's duration, picture, and audio before removing the original.
Open a short browser-generated recording and create an MP4 copy for a presentation workflow.
This workspace converts WebM to MP4; it is not a universal video-format converter. Device resources and browser support limit practical file sizes.
Open a WebM video and wait for the conversion runtime to load. Review the available settings and start conversion. Download the MP4 and check its video and audio playback.
This workspace converts WebM to MP4; it is not a universal video-format converter. Device resources and browser support limit practical file sizes.
No registration, no tracking of your content, no server uploads. Don't just take our word for it:
Your files and text are processed entirely on your device. Nothing is ever sent to us.
Once loaded, this tool keeps working with your Wi-Fi turned off. Try it.
Open your browser's DevTools → Network tab. You'll see zero requests carrying your data.
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