How it works
- 1Choose the requested media file or files.
- 2Adjust the output, quality and layout options.
- 3Run the tool, preview the result and download it.
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BROWSER · FFmpeg WebAssembly · local browser
Video Converter — MP4, WebM, MOV & MKV
Convert video to MP4, WebM, MOV or MKV locally with a private browser-based FFmpeg engine. No upload or account required.
✓ Files never leave your device✓ Local FFmpeg WebAssembly processing✓ No account or watermark added by Toolardo
About this tool
Convert video to MP4, WebM, MOV or MKV locally with a private browser-based FFmpeg engine. No upload or account required.
Common uses
video convertermp4 converterwebm convertermov converter
Frequently asked questions
Are my media files uploaded?
No. The files are processed in private browser memory and never sent to Toolardo.
Why does the first run take longer?
The browser downloads a local FFmpeg WebAssembly engine of about 32 MB. It is normally cached for later video tools.
Can I process very large videos?
Browser memory varies by device. This tool limits selected input to 768 MB; native desktop processing is better for multi-gigabyte files.